div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentimages-robert-f-betz-department-of-biology-northeastern-illinois-universityhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: Images ServerimageslibrarywisceduEcoNatResEFacsNAPCNAPC05Robert F Betz Department of Biology Northeastern Illinois University Chicago Illinois 60625 and Gerald Wilhelm loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsinreader033viewer20220505155f9fd5834f9d6b03592c162fhtml5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=documentimages-robert-f-betz-department-of-biology-northeastern-illinois-universityhtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: Images ServerimageslibrarywisceduEcoNatResEFacsNAPCNAPC05Robert F Betz Department of Biology Northeastern Illinois University Chicago Illinois 60625 and Gerald Wilhelm loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsinreader033viewer20220505155f9fd5834f9d6b03592c162fhtml5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=documentimages-robert-f-betz-department-of-biology-northeastern-illinois-universityhtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: Images ServerimageslibrarywisceduEcoNatResEFacsNAPCNAPC05Robert F Betz Department of Biology Northeastern Illinois University Chicago Illinois 60625 and Gerald Wilhelm loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsinreader033viewer20220505155f9fd5834f9d6b03592c162fhtml5thumbnails3jpg...