22 



6003-6031. Mammalia. 

 6003 Mammalia. Gteneral and Comprehensive Works. 



6007 Mammalia. Structure. 



[For sub-divisions, see 0207.] 



6011 Mammalia. Physiology. 



[For sub-divisions, see 0211.] 



6015 Mammalia. Development. 

 [For sub-divisions, see 0215.] 



6019 Mammalia. Ethology. 



[For sub-divisions, see 0219.] 



6023 Mammalia. Variation and ^Etiology. 

 [For sub-divisions, see 0223.] 



6027 Maimmalia. Geography. 



[For sub -divisions, see J, 1 and 2.] 



6031 Mammalia. Taxonomy and Systematic. 



The main divisions of Mammalia are as folloAvs, in 

 alphabetical arrangement : — Carnivora ; Cetacea ; 

 Chiroptera ; Edentata; Insectivora; Marsnpiaha; 

 Monotremata ; Multituberculata ; Primates ; Ro- 

 dentia ; Sirenia ; Tillodontia ; Ung-ulata (Artiodactyla, 

 Perissodactyla, Subungulata). 



