2.] SCIENCE. logscience.sciencemag.org/content/sci/ns-19/472/local/back-matter.pdf · FEBRUARY I19,...

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FEBRUARY I19, I 89 2.] log southern hemisphere to cool the ocean wate.rs and still further lower the temsperature of the Gulf Stream, and also the tropical currents of the oceans, including tbe great Japanese current, the ice period of both hemispheres vvould be brought about during the same era. For it is well known to those who bave studied the subject that the Gulf Stream derives a large portion of its beat from the south Atlantic; which would not be the case should the waters of the southern hemisphere be chilled by ice. For it ap- pears that all of the south Atlantic islands during frigid times were burdened with glaciers. Even the isla-nd of St. Helena, situated in the tropical zone, has the appearance of having been heavily iced during some remote period. Its steep ravines, which deepen as they approach tbe sea, recall to the soutbern voyager the ice- worn islands of the higher latitudes. Thus when the temperate regions of both hemispberes were heavily iced the temperature of the tropical seas must have been comparatively low, especially on the eastern sides of the oceans which are swvept by the polar cur- rents. Moreover, the sea was much salter than now, on- account of a large portion of its waters being absorbed by glaciers. Fur- tbermore, whenever the arctic channels are filled with glaciers the, indef,endent circulation of the arctic waters must cease; conse- quently the Gulf Stream, meeting with less opposing polar cur- rents on its sweep naorthward, would thus be able to gain a much higber latitude than now. Although its waters at first would be colder than t,hey are to-day; still tbeir superior saltness would add to their ability for dissolving ice wherever they were able to flow. But it appears that the Gulf Stream and otber tropical currents of tbe northern oceans would not be able to subdue the cold accu- mulated in nortbern ice-sbeets witbout the assistance of a com- parativelyr warm ocean in the southern bemispbere. The southern seas being so much superior and so widely connected with the northern, the tropical currents of the latter seas would require the assista-nce of the soutbern oceans to subdue thle cold of a nortliern ice period, in the same degree that it required their co- operation to bring about the frigid period. The arctic straits, wbich now facilitate the independent circulation of cold Arctiec wvaters, would, when filled with glaci'ers, be slow to thawr ouit, even with the increasing warmth of the arctic regions, on account of being situated to the windward of the warm gulf currents. Tbere- fore, the glaciers that filled their deep channels would be the last great body of ice to melt in the northern. regions; and -for this reason it is probable that there are fragments of the old ice of the last frigid 'period still unmelted and now form a portion of the lower shores of the arctic straits. This conclusion is in har- mony wvith reports from Point Barrow which i-nfo-rm us that a stratum of pure ice is found beneath the scanty soil.. The low temperature of the waters of thle tropical oceans during the per- fection of a frigid period must have been very destructive to oceanic life; while such as survived probably found refuge in nearly landlocked equatorial seas, where the waters were largely excluded 'from the colder ocean, and also freshened by sucb rivers as emptied into them. Meanwbile, the low temperature of the ocean must bave chilled the atmosphere over the land to such a degree as to have caused the destruction of many species of ani- mals C. A. M. TABER. Lake Como, Florida, Feb. 5. Electricity in Agriculture. THE, abstract under the above title in Science for Jan. 15, 1892, which I have only just found time to read, proves very interest- ing to me, and I do inot wish in any way to bave it inferred that I disbelieve in the influence of electricity, at least indirectly, upon the growth of plants; but it does not seem out of place to call at- tention to the fact that the comparative rarity of mildew on plants grown-above electricity-bearing copper wires in moist soil may be diie to the action of the copper salts formed in killing the mildew ratber than to electrical action. den A" (Science, p. 36) are stated to have "'grown about the wires, as if there they found the- greatest amount of nourishment," etc. This would also be the result from the roots seeking the en- vironment best'suited for growtb, if tbe mildew could inot thrive about the wires on account of the trace of copper salts wbhicb the soil contained. The use of sprays containing copper salts, in tbe form of Bor- deaux mixrture or similar compounds, as a preventive of mildew of grape-vines and otber plants is well known, and the control plot, 44 Garden B, sbould have been provided with copper wires, exactly as was II Garden A," to make the results of the experi- ment conclusive. As I bave not seen the original article ill the Bulletin of the Hatch Exrperiment Station, from which the abEstract in -Science was taken, it may be tbe fact that this action of the copper salts upon mildew has been discussed there. GEORGE DIMMOCE Canoble Lake, N.HI., Feb. 15. AMONG THE PUBLISHERS. E. &; F. N. SPON &5 CO. announce 'i Roll Turning for Sectioins in Steel and Iron, " by Adam Spencrer. The subject of roll-turning iS tTeated froin a purely practical poiint, and for practical men. The drawings are the result of experience, and their value consists in the fact that they are working drawings, that is, drawings of rolls wbich have passed tbrough the ordeal of actual workr. The arrangement of the work is as follows: First, drawing of modern blooming for steel slabs, followed by a pair of billet rolls, then various sections sbowing the related grooves in cogging, rougbing, and finishiDg rolls, wvith the position and cha-racter of collars re- quired. "1 A Text-Book of the Science of Brewing," by Edward Ralph Moritz and George Harris Morris. The following extract from the introduction will show its character: "4The object of this work is to provide in a convenient and accessible form such knowledge of the processes of brewing and of the materials em- ployed in that industry as is at our disposal; aind -so far as we are able -to connect sueb kinowledge *vith tbe practice of brew- iDg. We tberefore intend it as a text-book in which may be found the results of scientific research together with the practical con- clusions wbich 'we consider justly deducible from thern. We do not pretend that a perusal of our work will enable a novice to brew beer; neitber will a study of it convert a purely practical man into a chemist. It is meant, however, to lead the brebwer-to a better understanding of what we may term the physiology and pathology of brewing, and, byr so doing, put at bis disposal a means for more efficient control-over his operations." "Manual of In- struction in Hard Solderiing," by'Hwvey Rowell. "The Mechani, cal and Other Properties of Iron and Steel in Connection with Their Chemical Composition," by A. Vostmaer, engineer. The author has gathered together the wvidely scatteredi information on this important subject, and gives in brief outline the actual knowledge of the intimate connection that exists between the properties of steel and iron a-nd their chemical composition. The elements - carbon, manganese, silicon, phospborus, sulphur, copper, chro- mium, titanium, tuDgsten, aluminium, nickel, cobalt, arsenic, anti- muony, zinc, lead, t-in, silver, molybdenum, vanadium, potassium, sodium, barium, stro-ntiutm, calcium, and magnesium-hbave been considered separately and in the following manner: First, as to the metallulrgical behavior of the elements in question; nexrt, to deal with their influence on pig iron, cast iron, wrought iron,7 and steel; lastly, the special uses made of them, and their occur- rence in manufactured objec'ts. The gases, intermolecular, reac- tion, and mixred, have beein 'carefully considered, and analyrses given of foundry, bessemer, basic, and forge pig-irons, spiegel- irorw, ferromanganese, ferrosilicons, ferrochromes, ferrotungsten, ferroaluminium, cast-iro-ns, weld irons. Steel - railway material, structural steel, ordnlance material, miscellaneous. With a dia- gram of silicon in cast iron,. and of disappearance of carbon. Also a new edition of "1 A Practical Treatise upon Warming Build- ings by Hot Water." -Morris Phillips of the H;ome Journal goes abroad every sum- mer for recreation and business. He bas kept up that habit for nearly twenty years, besides travelling widely over this country, and as a result of bis experiences be bas just compiled a note- bookr of practical hints for tourists entitled "1 Abroad aind at Home,7" in wrhicb he gives incidents of bis travels, as well as a SCIENCE.

Transcript of 2.] SCIENCE. logscience.sciencemag.org/content/sci/ns-19/472/local/back-matter.pdf · FEBRUARY I19,...

Page 1: 2.] SCIENCE. logscience.sciencemag.org/content/sci/ns-19/472/local/back-matter.pdf · FEBRUARY I19, I892.] log southern hemisphere to cool the ocean wate.rs and still further lower

FEBRUARY I19, I 89 2.] logsouthern hemisphere to cool the ocean wate.rs and still furtherlower the temsperature of the Gulf Stream, and also the tropicalcurrents of the oceans, including tbe great Japanese current, the iceperiod of both hemispheres vvould be brought about during thesame era. For it is well known to those who bave studied thesubject that the Gulf Stream derives a large portion of its beatfrom the south Atlantic; which would not be the case should thewaters of the southern hemisphere be chilled by ice. For it ap-pears that all of the south Atlantic islands during frigid times wereburdened with glaciers. Even the isla-nd of St. Helena, situatedin the tropical zone, has the appearance of having been heavilyiced during some remote period. Its steep ravines, which deepenas they approach tbe sea, recall to the soutbern voyager the ice-worn islands of the higher latitudes. Thus when the temperateregions of both hemispberes were heavily iced the temperature ofthe tropical seas must have been comparatively low, especially onthe eastern sides of the oceans which are swvept by the polar cur-rents. Moreover, the sea was much salter than now, on- accountof a large portion of its waters being absorbed by glaciers. Fur-tbermore, whenever the arctic channels are filled with glaciers the,indef,endent circulation of the arctic waters must cease; conse-quently the Gulf Stream, meeting with less opposing polar cur-rents on its sweep naorthward, would thus be able to gain a muchhigber latitude than now. Although its waters at first would becolder than t,hey are to-day; still tbeir superior saltness would addto their ability for dissolving ice wherever they were able to flow.But it appears that the Gulf Stream and otber tropical currents oftbe northern oceans would not be able to subdue the cold accu-mulated in nortbern ice-sbeets witbout the assistance of a com-

parativelyr warm ocean in the southern bemispbere. The southernseas being so much superior and so widely connected with thenorthern, the tropical currents of the latter seas would requirethe assista-nce of the soutbern oceans to subdue thle cold of anortliern ice period, in the same degree that it required their co-operation to bring about the frigid period. The arctic straits,wbich now facilitate the independent circulation of cold Arctiecwvaters, would, when filled with glaci'ers, be slow to thawr ouit, evenwith the increasing warmth of the arctic regions, on account ofbeing situated to the windward of the warm gulf currents. Tbere-fore, the glaciers that filled their deep channels would be the lastgreat body of ice to melt in the northern. regions; and -for thisreason it is probable that there are fragments of the old ice of thelast frigid 'period still unmelted and now form a portion of thelower shores of the arctic straits. This conclusion is in har-mony wvith reports from Point Barrow which i-nfo-rm us that astratum of pure ice is found beneath the scanty soil.. The lowtemperature of the waters of thle tropical oceans during the per-fection of a frigid period must have been very destructive tooceanic life; while such as survived probably found refuge innearly landlocked equatorial seas, where the waters were largelyexcluded 'from the colder ocean, and also freshened by sucb riversas emptied into them. Meanwbile, the low temperature of theocean must bave chilled the atmosphere over the land to such adegree as to have caused the destruction of many species of ani-mals C. A. M. TABER.

Lake Como, Florida, Feb. 5.

Electricity in Agriculture.THE, abstract under the above title in Science for Jan. 15, 1892,

which I have only just found time to read, proves very interest-ing to me, and I do inot wish in any way to bave it inferred thatI disbelieve in the influence of electricity, at least indirectly, uponthe growth of plants; but it does not seem out of place to call at-tention to the fact that the comparative rarity of mildew on plantsgrown-above electricity-bearing copper wires in moist soil may bediie to the action of the copper salts formed in killing the mildewratber than to electrical action.

den A" (Science, p. 36) are stated to have "'grown about thewires, as if there they found the- greatest amount of nourishment,"etc. This would also be the result from the roots seeking the en-vironment best'suited for growtb, if tbe mildew could inot thrive

about the wires on account of the trace of copper salts wbhicb thesoil contained.The use of sprays containing copper salts, in tbe form of Bor-

deaux mixrture or similar compounds, as a preventive of mildewof grape-vines and otber plants is well known, and the controlplot, 44 Garden B, sbould have been provided with copper wires,exactly as was II Garden A," to make the results of the experi-ment conclusive. As I bave not seen the original article ill theBulletin of the Hatch Exrperiment Station, from which the abEstractin -Science was taken, it may be tbe fact that this action of thecopper salts upon mildew has been discussed there.

GEORGE DIMMOCECanoble Lake, N.HI., Feb. 15.

AMONG THE PUBLISHERS.E. &; F. N. SPON &5 CO. announce 'i Roll Turning for Sectioins

in Steel and Iron, " by Adam Spencrer. The subject of roll-turningiS tTeated froin a purely practical poiint, and for practical men.The drawings are the result of experience, and their value consistsin the fact that they are working drawings, that is, drawings ofrolls wbich have passed tbrough the ordeal of actual workr. Thearrangement of the work is as follows: First, drawing of modernblooming for steel slabs, followed by a pair of billet rolls, thenvarious sections sbowing the related grooves in cogging, rougbing,and finishiDg rolls, wvith the position and cha-racter of collars re-quired. "1 A Text-Book of the Science of Brewing," by EdwardRalph Moritz and George Harris Morris. The following extractfrom the introduction will show its character: "4The object ofthis work is to provide in a convenient and accessible form suchknowledge of the processes of brewing and of the materials em-ployed in that industry as is at our disposal; aind-so far as weare able -to connect sueb kinowledge *vith tbe practice of brew-iDg. We tberefore intend it as a text-book in which may be foundthe results of scientific research together with the practical con-clusions wbich 'we consider justly deducible from thern. We donot pretend that a perusal of our work will enable a novice tobrew beer; neitber will a study of it convert a purely practicalman into a chemist. It is meant, however, to lead the brebwer-toa better understanding of what we may term the physiology andpathology of brewing, and, byr so doing, put at bis disposal a meansfor more efficient control-over his operations." "Manual of In-struction in Hard Solderiing," by'Hwvey Rowell. "The Mechani,cal and Other Properties of Iron and Steel in Connection withTheir Chemical Composition," by A. Vostmaer, engineer. The authorhas gathered together the wvidely scatteredi information on thisimportant subject, and gives in brief outline the actual knowledgeof the intimate connection that exists between the properties ofsteel and iron a-nd their chemical composition. The elements-carbon, manganese, silicon, phospborus, sulphur, copper, chro-mium, titanium, tuDgsten, aluminium, nickel, cobalt, arsenic, anti-muony, zinc, lead, t-in, silver, molybdenum, vanadium, potassium,sodium, barium, stro-ntiutm, calcium, and magnesium-hbavebeen considered separately and in the following manner: First, asto the metallulrgical behavior of the elements in question; nexrt,to deal with their influence on pig iron, cast iron, wrought iron,7and steel; lastly, the special uses made of them, and their occur-rence in manufactured objec'ts. The gases, intermolecular, reac-tion, and mixred, have beein 'carefully considered, and analyrsesgiven of foundry, bessemer, basic, and forge pig-irons, spiegel-irorw, ferromanganese, ferrosilicons, ferrochromes, ferrotungsten,ferroaluminium, cast-iro-ns, weld irons. Steel- railway material,structural steel, ordnlance material, miscellaneous. With a dia-gram of silicon in cast iron,. and of disappearance of carbon.Also a new edition of "1A Practical Treatise upon Warming Build-ings by Hot Water."

-Morris Phillips of the H;ome Journal goes abroad every sum-mer for recreation and business. He bas kept up that habit fornearly twenty years, besides travelling widely over this country,and as a result of bis experiences be bas just compiled a note-bookr of practical hints for tourists entitled "1 Abroad aind atHome,7" in wrhicb he gives incidents of bis travels, as well as a

SCIENCE.

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I

Wants. Exchanges.[Freeofcharge to all, if ofsatisfactorycharacter.

Address N. D. C. Hodges, 874 Broadway, New York.1

To excchange; Experiment Station bulletins andreports for bulletins and reports not in my 1lle. Iwrill send list of what I have for exchange. P. H.bROLF'S, Lake City, E'lorida.

Finished specimens of all colors of Vermont marble forfine fossils or crystals. Will be given only for valuablespecimens because of the cost of polishing. GEO. sW.PERRY, State Geologist, Rutlanld, Vt.

For exchange.-Three copies of "American StatePap`eirs Bearingon Sundas Legislation," I89I $2.5o,newand unused, for "The Sabbath,"' by Harmon K,ingrblury,i840; "The Sabbath," by A. A. Phelps, r842; ' istoryof the Institution of the Sabbath Day, Its'Uses andAbuses,"' by W. L. Fisher, I859;- " Humorous Phases ofthe La, ' y Irving Browne; or other works amountingto value of books exchanged, on the question of govern-mental legislation in reference to religin persnal liberty,etc. If preferred, I will sell "American State Papers,"'and buy other books on the subject. WILLIAM AD-DISON BLAKELY, Chicago, lll.

Wanted, -in exchange for the following works, anystandard works on Surgery and on Diseases of Children:Wilson's " American Orni-thology," 2 VO]S.* Coues'"'Birds.of the Northwest " and " Birds of Le CoIforado Valley,"2 VOIS.; Minot's "Land and Game Birds of New Eng-land;" Samuels"' Outr Northern and Eastern Birds;" allthe Reports on the Birds of the Pacific R. R. Surveybound in 2 voIs., morocco; and a complete set of ZhReports of the Arkansas Geoloyical Survev Please giveeditions and dates in corresponding R. E&LSWORHC:ALL, High School,Des Moines, Iowa.

iWanted to buyo exchange a copy of Holbrook's.North AmericanuTlerpetology, by.John Edwards' S vols.Philadelphia, 1842. G. HAUR, Clark University,Worcester, Mass.

For sale or exchan e, LeConte, "Geology, Oui"Anatomy," 2 vols;- oster, "Physiolcogy," Eng. edition--Shepard, Appleton, Elliott, and Stern, "Chemistry;'Jordan, "' Manual of Vertebraites-" " International Scien-tists' Directory-" Vol. I. _7ourna'lof Morfihology; Bal-four, " Embylg, 2 vols.-C Leidy, "1 Rhizopods."Science, z8 vos,ubound. C.T. McCLINI Oci,Lexington,Ky

To exchange Wright's " Ice Age in North America".and Le Conite's "Elements of Geology" (Copy iht z882Xfor "Darwinism,"' byA R.Wallace, "Origin of Species,"'by Darwin, "Descent of Man," by Darwin , "Man'sPlace in Nature," Huxley, "Mental ENvolution in Ani-mals," by Romanes, "Pre-Adamites," by Winchell. No.books uYanted except latest editions, andl books in goodcondition. gC. S. Brown, Jr., Vanderbilt University,,Nashville, Tenn.

W~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Business De,Aartmenl.Intending investors anld others interested

in real estate matters in the rapidly devel-oping State of Washington are invited togive a careful reading of the advertisementof the Washington Fire Clay Company onfirst page of this number. Mr. C. CooperClarrk,Vice-President, will show photographsand blue prints of the property advertised.The writer is personally acquainited with allthe officers and many of the stockholders ofthis company and can vouch for the entirereliability and truthfulness of any state-ments they may make.

[VOL. XIX. -NO. 472tI1

co)mplete statistical'and detailed account of t}e cost of trips inEurope and America. It promises to be a vatuable guide-bookfor Americans.

-Henry Holt &; Co. will add immediately ,to Sneath's series ofmodern Pbilosophe-rs, volumes8 exrtracted from. Reid by Dr. Sneathof Yale University; from Spinoza, by Professor. Fullerton of theUniversity of Pennsylvania; from Kant. by Profess(or Watson ofQueell's College, Canada; aDd from Descartes, by Professor Torrey,of the Univ7ersity of Vermont. They contemplate adding, in the-near future, volumes from Berkeley, Hume, and Hegel.

"The Basis of the Demand for the Public Regulation ofIndustries " is the title of a monograph by the Hon. W. D. Dab-ney, wbich bas recently been published by the American Acad-emy of Political and Social Science. There bave boeen -nunibersof plans suggested to remedy these evils, the most notable ofwhich is, probably, socialism. Mr. Dabney thinks that this planwill not be adopted, but tbat- government regulation of privatebusiness will be tried as remedy for the existing evils of privatemonopolies.

-The Department of Astronomy of the Brooklyn Institute ofArts and Sciences has just issued a "1 Hand-book of Astronomyfor 1892." The publication is in a new field, and is one that willcommand general interest an1d constant use-by a very large num-ber of peqople who have considerable general knlowledge of as-

tronomy, an'd Wrho desire to couple with infor'mation gained byreading a practical knowledge fromz experience and observation.The new publication is designedl to aid in the observation of theplanets anad the constellations every bour whein they are visibledurinog the year 18923. The hand book w ill not only prove inter-estincr to the '*, aiiiateur " astronomer, but also to those who areworlking with iDstruments in observatories. It contains calendarsof the eclipses of the suu and moon, of the periods of the inferiorplanets as morning and evening stars, aiid of the periods of thegreatest brilliancy and elongation of the planets, a selection of th-emost important occultations of stars, calendars of the positions ofthe sun, moon, and planets for each (lay of each month, brief ac-counts of the opposition of Mars, of the evidlence of Venus' rota-tioin, tables sbowing the motions and positions of Jupiter's satel-lites, the names and positions of colored stars and double starstables of the variable staris of long periods and of short periods,i,accounts of the zodiacal light and the principal meteoric showersof the year, together with a great deal of valuable informationconcerning the satellites, the distances of planets and stars, thelengths of the years of the planetis and the wreights and ditnensionsof the members of the solar system. A calendar for the seasonsand the churcb calendak are convenient additions. Copies of thehand-book may be purchased by-members of the institute, or byothers interes,ted in astronomy, at twenty cents per copy, includ-ing postage.

C'ALENDAR OF SO(,ETIES.

Philosophical Society, Washington.Feb. 13.-Gardi:ner G}. Hubbard, The His-

tory of the Education of the Deaf; A. W.Greely, Some Peculiarities in Ithe Rainfallof Texas.

Society of Natural- Hi1story, Boston.Feb. 17.-GeorgeL. Goodale, Illustrations

of Veigetation in Ceylon.

Axyjersox seeking-afisition for 2which ke is quali-tied by.his scientific attainmexes, or anyhersow-eeeixgtome one to .fill a _Aosition of thzis ckaracter, he it thatofa teacker ofscience, chemist, draughtsmax, or whatxot, may have tlte ' W4axt ' inserted uxder this headFREEI OF COST, if he satisfies- hetubisher of the suit-able characer ofhis afi,Aicatiox. AxytySrsox seekinginformation on axy scientif/ic qestion, the address ofax sciextibic man, or wJho can In axy way u4se {his col-umx for a fiurfiose coxsoxast with the nature of tkej6a,oer, is cordially invited to do so.

A-PROFESSORSHIP in Chemistry is wanted byAone who haa had five years' experience in thatcapacity. Would prefer to give instruction bylectures and esperiments rather than by text-bookmethods. Wo>uld like a position in a college or uni-versity where. there is a good student's laboratory.Special points of strength claimed are: (1) Thoroughcontrol of a class and good order during. lecturesand recitations. (2) Accuracy in experimentingwith chemicals and skill in the manipulation ofchemioal apparatus. The permission of several dis-tinguished educators has been given to refer tothem if required. Would not care to accept a po-sition payiug less than S;l,500. Address B. E ., careof Science, 8774 Broadway, New Yorkr.

Publications received at Editor's Office.I

BowszR, EDWARD A. ElemeDts of Plane and SolidG#eometry. 2d ed. Boston, D. C. Reath &; Co.120. 893 p. 13.

BROCKWAY, FRED J. Essentials OF lltdical Physics.Phila., W. B. Saunders. 12°. 88 p. $1 net.

HARVARD COJLEIGEM. Annual Reports of the Presi-dent and Treasurer, 189091. Cambridge, TheUniversity. 8°, paper. 294 p,

HzmPEL, WALTILER. Methods of Glas Analv8is.Trans. from the German by L. M1. Dennis. NewvYork, Macmillan &; Co. 120. 401 p. $1.90.

LEmFAVEL CARRICA. Deleartean Physical Culture.New 3'ork, Fowler & Wells Co. 120, paper. 108 p.

1lC1ILLOP, DUGALD. Shorthand and typewriting.New York, Fowler&d Wells Co. 12°1, paper. 12.3 p.

MuNqRo, J. Heroes of the ITe1egraph. LJondon, Re-ligiousTract Society. 120, 288-p.~S1.40.

MUSEUM Or FINz ARTS. Catalogue of the Print Department. Boston, The Mluseuil. 120, paper.98p.

SCOTT,,W. The Lady of the Lake. E3d. by WilliamJ. Rolfe. Boston, EIoughton, Mifflin A; Co. 160°paper. 278 p. 80 cents.

8CRIBNERM'S MYAG#AZINEM. Index to Vols. I-X. NowYork, Charles Scribner's Sons. 8°0. 89 p.

TEXURSTON, ROBERT H. A MSanual of the Steam Engine. Part II. Design, Constraction and Opera-tion. Near York, John Witey A; Sons. 8°. 967 p.

WHITE. CHARLEs E. Number Lessons. Boston, D.C. Reath & CO. 120. 201 p. 45 cents.

DDRESSESof Od Book Dealers wanted.-Wish-A in toobtan anumber of old books out of print,Itryuchdesrethe addresses or catalogues of

rare seeond-hand book dealers. If.there is a direc-tory or list of such dealers I should like to obtainIpos,session of one. W. A. BLAKVELY, Chicago, Ml.

WANTED.-Bookts on the Mlagic Lantern, Wille, change, "1 How the Fwarm Pays," by Cozier

and Henderson;* " Culture of Fsarm C3rops,." byStewart, "1American Agriculturist," 1890 and 1891.I. SLEE ATKtINSON, 43 W'allace St.', Orange, N. J.

WANTED.-Ol) A white man versed in wood andWiron workinog, able to work from specificationsand plans, suited for anl iustructor of boys; his bus-iness to have charge of shops of school, outline anddirect the work for foremen and students; Fsalary tobe $1,000 per annum (nine months,). (2) A manIbIack trererred) to teach the colored, iron workingand forging, subordinate to the preceding; salary,$720. (3 A man (white) competent to take classesin engineeriDIg (assistant's position), but with tbe.Iability to perform any of the work requiired -in aBsof the ordmDary engineering courses of our universi-ties; salary from $1,000 to $1,5U0. A. H. BEALS,Milledgeville, G#a.

For Sale or Exchange for books a -complete privatechemical laboratory-outfit. Includes large Becker bal-cance (2o0g, to s-1Xomg), platinum dishes and crucibles,agate motors, glassblowing apparatu's, etc. -For sale inpart or whole. Also cqmplete file of Silliman's -7ourmalx862-1885 (62-71 bouind)- Smithsonian Reports, 1854-I883'U. S. Coast Survey, I854'1869. Full- particulars to en-quirers. F. GART)INER, JR., Pomfret, Conn.

HOOKS: R1ow to Exchange them forothers. Send a postal to the SCIENCE exchanIgecolumn (insertion free), stating briefly what youIwant to exchange. SCIENCE, 874 _Broadway, NewYork.

L'")CIENCE.

ADDRESS WANTED.-Will some one please sendA the address of the Secretary of the AmericanPhilological Society. Also that of Herbert Spencer."ADDISON,'. Room 84, 164 Madison St., ChLicago, lll.

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SCIENCE.--The Chautauquzan for March presents the following among

other articles: Growth and Distribution of Population in theUnited States, by General Francis A. Walker; Physical Culture,II., by J. M. Buckley; National Agencies for Scientific Research,V., by Major J. W. Powell; Ocean Perils, by Felix L. Oswald,M.D ; The Ownership of Literary Property, by George HavenPutnam; Lyceum Attractions of To-day, by W. H. Stenger; TheNational Library and its Librarian, by Fannie C. W. Barbour;Words to the Deaf, by Katherine Armstrong; What Women Oweto Inventions, by Margaret N. Wishard.- John Wiley & Sons have in preparation a work on timber

and metallic structures entitled "' Theory and Practice in the De-signing of Modern Framed Structures." This book is writtenjointly by Professor J. B. Johnson, author of " Theory and Prac-tice of Surveying," and professor of civil engineering in Washing-ton University, St. Louis, by Mr. C. W. Bryan, designing engi-

I I I

neer of the Edge Moor Bridge Works, Wilmington, Del., and byF. E. Turneaure, instructor in civil engineering in WashingtonUniversity. It will describe in great detail the most modern andapproved styles of structures and methods of analysis, giving onlya historical review -of obsolete forms of trusses tan] abandonedanalytical methods. It will treat not only of bridges and roofsbut also of trestles, viaducts, stand-pipes, elevated tanks, and steelskeletons for high buildin,s. It will be adapted to serve both asa text-book in the higher engineering schoDls and as a hand-bookfor the designing engineer.

-Hougliton, Mifflin, & Co. have just ready " Mark Hopkins,"illustrious as president of Williams College for tbirty-six years,atnd as president of the American Board of Commissioners forForeign Missions for thirty years, by Professor Franklin Carter,present president of Williams College; also a new work, by Dr.Josiah Royce, entitled " The Spirit of Modern Philosophy."

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SCIENCEADVERTISING RATES.

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INSIDE PAGES.Per line, agate measure, 14 lines to an inch 15c.

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MATTER.Per line, agate measure, 14 lines to an inch, 20C." column, " 140 lines, - $25.00

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FEBRUARY 19, 1892.]

Am

Page 4: 2.] SCIENCE. logscience.sciencemag.org/content/sci/ns-19/472/local/back-matter.pdf · FEBRUARY I19, I892.] log southern hemisphere to cool the ocean wate.rs and still further lower

a

"VOL. XIX. No. 472

FIN&NCI-AL.I,

Newa Method of Protecting Propertyfrom Lightning.

Te Lihnn Dipler.Price, $20 to $30. According to size.

The Patent Lightning Dispeller is a conduc-tor specially designed to dissipate the energyof a lightning discharge,-to prevent itsIdoing harm,-placink something in its pathupon which its capacity for causing damagemay be expended.No recorded case of lightning stroke has

yet been cited against the principle of theDispeller. So far as known, the dissipationof a conductor has invariably protected underthe conditions employed.Correspondence solicited.

AG-ENTS WANTED.

The American L%ihtningf Protection CompanyUnited Bank Building, Sioux City, Iowa.

T Ar 1\ f \ INVESTM ENTS1 rvtvlelA FOR NON-RESIDENTS.TAYLOR & GUNSTON

Take full charge of property for the

EASTERN INVESTOR.City, Town, and Suburban Lots,

Garden, Fruit, Hop and Timber Lands.

10°lo Guaranteed on all Inyestments.Houses for sale on thelinstalment plan, by which

the purchaser can obtain an income sufficient tocover all payments, including taxes,insurance,etc.Information regarding any particular point in

the State of Washington gladly furnished uponaLpplication. Personal attention given to all loans.Correspondence solicited. Refer, by permission,to the Pacific National Bank' Tacoma, Wash.;Geo. H. Tilley, Esq., Secretary and Treasurer ofthe Southern Express Co., and Frederick C.. Clark,of Clark, Chapin & Bushnell, New York.Address 504 California Bl'k,Tacoma,Wash.

-Eastern Representative,H. F. TAYLOR, 47 Lafayette Place, New Y-ork.

0;~ NEW YORK.

Factory Ends at half price; one ounce in a box. AUIsroosik ad god olors. Sent by mail on receipt of1bent,08 raz sitcesin each packae Latest andbztboor -on rt eelewrk,onl 10cens.A beauti.

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SCIENCE.11I2

FINANCIAL.DBRY GOO)DS, ETC.

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REAL'THREAD FACE VEILS.OU.K NET8, VEILING8.

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THE

COPANY96 MILK ST., BOSTON) MASS.

Tbis-Companly owns the Lette'rsPatent granted to Alexander GEra-ham Bell,, March 7th, 1876, No.174,465;, and Janluary 30, 1877,No. 1869787.The Transmissionl Of Speech by

all known forms of ELECTRICSPEAKING TELEPHlONES inI-fringes the right secured to thisCompany bythe above patents, andrenders each individual user oftel-ephones, not furnished by it or itslicenlsees., responsible for such un-lawful use, andl all the conse-quenlces thereof and liable to suittherefor.

taotei CS

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DR-ESS GOODS.-FEBRUAft Y_ OPE2VIYG.

In order to generally introduce the manypeculiar and intricate weaves of our now im-portations of Dress Goods, we have arrangedfor a special exhibit this week..-The largest -and. most varied stock of High

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beautifut- goods.-

James Mc-Cr'eery & Co.BROADWAY & I lth' STREET,,- 1NEW YORK.

All the capiltal desilred for the p'arent companyto handle my patents on a new mlethod of protect-ing bu.ild'ings from lightning has been s.ubscribed.Sub-compan-ies and agencies to introduce thein-vention are f6rm'ing,- and 'any desirous of tak-inIg Sta;te-rilghts should address lThe .AmericanL'ghtnilng Protect'ion Co., Si'oux City, Iowa,,The Englilsh patent -is for sale, and offers

an excellent opportunity for the formation of acompany now that the American company issofavorably started.

N. D.. C. HODGES, -874. Broadway, New York.