LECTURE II. 39 



food ; 2. Sharp, lengthened, or canine teeth, si- 

 tuated on each side the cutting-teeth, and calcu- 

 lated for tearing and dividing the food; and lastly. 

 Grinders^ with broad, angular tops, for commi- 

 nuting or grinding the food. They are situated, as 

 in the human subject, on each side the jaws. The 

 teeth afford a principal character in forming the* 

 tribes and genera, or particular sets of Quadrupeds ;, 

 their distribution differing greatly in the different 

 kinds. In some the canine teeth are wanting; in 

 others the front teeth; and some few are totally 

 destitute of any teeth. 



The tail in Quadrupeds is formed by a con- 

 tinuation of the yertebrai or joints of the back-bone; 

 and is in some of great length, and covered with 

 very long hair: in others very short; and in some 

 few entirely wanting, as in the real or genuine 

 Apes. 



The Senses of the Mammalia consist, as in 

 Man, of the organs of sight, hearing, tasting, and 

 smelling, and the power of feeling; and in many of 

 tliese animals the organs are of greater acuteness 

 or sensibility than in Man, The Eyes, in some 

 Quadrupeds, are furnished Vv'ith what is called a 

 nictitating membrane, or semistr'ansparent guard, 



I.ECT. II. © 



