152 OF INSTINCT. SECT. XVI. ^ 



of the milkmaid. The celebrated Harvey obferves, 

 that the foetus in the womb muft have fucked in a 

 part of its nourishment, becaufe it knows how to 

 fuck the minute it is born, as any one may expe- 

 rience by putting a finger between its lips, and 

 becaufe in a few days it forgets this art of fucking, 

 and cannot without fome difficulty again acquire it, 

 (Exercit. de Gener. Anim. 48). The fame obfer- 

 vation is made by Hippocrates. 



A little further experience teaches the young 

 animal to fuck by abforption, as well as by com- 

 preffion ; that is, to open the cheft as in the be- 

 ginning of refpiration, and thus to rarefy the air 

 in the mouth, that the preffure of the denfer ex- 

 ternal atmofphere may contribute to force out the 

 milk. 



The chick yet in the fhell has learnt to drink by 

 {wallowing a part of the white of the egg for its 

 food ; but not having experienced how to take up 

 and fwallow folid feeds, or grains, is either taught 

 by the folicitous induftry of its mother ; or by 

 many repeated attempts is enabled at length to 

 diftinguifli and to fwallow this kind of nutri- 

 ment. 



And puppies, though they know how to fuck 

 like other animals from their previous experience 

 in fwallowing, and in refpiration ; yet axe they 

 long in acquiring the art of lapping with their 

 tongues, which from the flaccidity of their cheeks, 

 and length of their mouths, is afterwards a more 

 convenient way for them to take in water. 



V. The fenfes of fmell and tafte in many other 

 an\mals greatly exceed thofe of mankind, for in 

 civilized fbciety, as our victuals are generally pre- 

 pared by others, and are adulterated with fait, 



fpice, 



