CLASSinCATIOK 



The Class MAMMALIA lias been grouped with tlie 

 Sauroids, or Sauropsida, for that they both lack apparatus 

 for breathing air when dissolved in water. They have been 

 hence termed Abranchiate Vertehrata, 



By virtue of being a Yertebrate, the Mammal is possessed 

 of well-marked characters, separating it from other Non- 

 Yertebrate living creatures {e. g. an endo- skeleton, &c., see 

 the Introduction) : and inasmuch as it is an air-breathing 

 Yertebrate, the ultimate sub-divisions of the appendages of its 

 scapular and pelvic arches will be found not to exceed five. 



This Class includes fifteen 



ORDERS : 



I. BiMANA YI. Sectosialia XI. Cete 



II. QUADKFMANA VII, PfiOBOSCIDIA XII. SlEEJTIA 



III. Inskctivora YIII. Pkeissodacttla XIII. Ij^-examellata 



IV. Cheiropteea IX. Hyracoidea XIV. Marsupialta 



V. Rod en Ti a X. Aetiodactyla XV. Moxotremata 



N.B.- For examples see the annexed Table. 



The Orders I. XIII. inclusive form the Sub-class 



'^PLACENTALIAr 



The Orders I. V^I. inclusive form part of a great section 

 of the Mammalia w^hich are possessed of claws, and are 

 thence termed 



''UNGUICULATAr"^ 



I. In the Order BIMANA is included the genus Homo 

 alone ; set apart as possessed of, hands (thumb opposable) to 



* Tho remaining three Orders whicli come under this wide Section are the 

 In-enamellata, Marsupialia^ and Monotrcmata, treated of later on. 



B 



