ANATOMY OF THE OLFACTORY ORGAN 39 



conchae. Forms that possess these larger numbers of 

 conchas are known to be keen-scented and are termed mac- 

 rosmatic. Those in which the number of olfactory conchas 

 is small, four or fewer, such as the seals, some whales, 

 monkeys, and man, are known to be less acute of smell 

 and are called microsmatic. Others again, such as the 

 toothed whales, porpoises and the like, in which the olfac- 

 tory organ has almost completely degenerated, are sup- 

 posed to be devoid of olfaction and are called anosmatio. 

 In such forms the nasal cavities have lost their original 

 sensory function and have come to be of importance only 

 in connection with respiration, a purely secondary relation. 



10. BIBLIOGRAPHY. 



ALCOCK, N. 1910. The Histology of the Nasal Mucous Membranet of the 



Pig. Anat. Rec., vol. 4, pp. 123-138. 

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Anak. Anz., Bd. 2, pp. 125-135. 

 ASAI, T. 1913. Untersuchungen iiber die Structur der Eiechorgane bei 



Mustelua laevis. Anat. Hefte, Arb., Bd. 49, pp. 441-521. 

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Sense of Smell. Jour. Comp. Neurol., vol. 11, pp. i-xl. 

 BEDFORD, E. A. 1904. The Early History of the Olfactory Nerve in Swine. 



Jour. Comp, Neurol., vol. 14, pp. 390-410. 



BLAUE, J. 1884. Untersuchungen iiber) den Bau der Nasenchleimhaut bei 

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DISSE, J. 1896b. Ueber Epithelknospen in der Regio olfactoria der Siiuger. 

 Anat. Heft, Abt. 1, Bd. 6, pp. 21-58. 



