OUR BEST FEATURES 



testing by the olfactory membrane of the contents 

 of the mouth, while the main portion of the olfac- 

 tory membrane served to test the inspired air in 

 the main chamber. In the marsupials and other 

 lowly mammals Jacobson's organ is comparatively 

 well developed but in the higher primates and 

 especially in man it is either absent in the adult 



cariila^e(fnose 



septal 

 "cariila^e 



oryan 



camlaoe 



Jacodsons 

 orffan 



-Jacobson's 

 car/Naye 



-pa/afab 

 'process 



Fig. 82. Jacobson's Organ in the Human Fcetus. 

 (After Corning.) 

 (From Lehrb. d. Enlw. des Menschen, J. F. Bergmann.) 

 For details, see p. xxxiii. 



stage or it exists in a vestigial and, so far as known, 

 a useless condition. It is present, however, in the 

 early foetal stages of man (Fig. 82), degenerating 

 later. Here then is another "poser" for anti- 

 evolutionists. Is the foetal human Jacobson's 

 organ made after a divine prototype? And is the 

 same true of the vestigial Jacobson's organ of the 

 Old World monkey? Or have both man and 



monkey received this now vestigial or foetal struc- 



159 



