. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 212 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY this problem is reviewed separately, however, and further dis- cussion is included there. Voeltzkow (1899) describes two Crocodylus embryos, head- len^^ths and mm. (his figs. 3 and 4, p. 44; see second para- graph of this section), which are of a comparable stage. The first of these possesses a Jacobson's organ very like that just described, but much more conspicuous (see Fig. 70). Whether. (_CNP Figure 71. Alligator 24: (; AMR). Frontal sections through the nas
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 212 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY this problem is reviewed separately, however, and further dis- cussion is included there. Voeltzkow (1899) describes two Crocodylus embryos, head- len^^ths and mm. (his figs. 3 and 4, p. 44; see second para- graph of this section), which are of a comparable stage. The first of these possesses a Jacobson's organ very like that just described, but much more conspicuous (see Fig. 70). Whether. (_CNP Figure 71. Alligator 24: (; AMR). Frontal sections through the nasal area. A, section 367; B, 32 sections ventral to A; C, 15 ventral to B; D, 12 ventral to C; E, 12 ventral to D; F, 11 ventral to E; and G, 7 ventral to F. 42x. this difference in size is a generic one between Crocodylus and Alligator or merely due to Voeltzkow's having obtained an embryo showing more nearly the maximum development of the organ than any of those used in the present study, I am unable to say. In the very slightly more developed series shown in his figure 4, Jacobson's organ seems to have disappeared almost completely, although there is still a very slight indentation in the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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