iSe O F I N S T I N C T. SICT. XVI. 8. 



kles it, and hence the tender feelings of gratitude 

 and love, as well as of hopelefs grief, are ever after 

 joined with the titiliation of the extremity of the 

 lacrymal ducts, and a profufion of tears. 



Nor is it fingular, that the lacrymal fack fhould 

 be influenced by pleafmg ideas, as the fight of agree- 

 able food produces the fame effect on the falivary 

 glands. Ac dum vidimus infomniis lafcivas puellse 

 fimulacrum, tenditur penis. 



Lambs make or wriggle their tails, at the time 

 when they firfl fuck, to get free of the hard excre- 

 ment, which had been long lodged in their bowels. 

 Hence this becomes afterwards a mark of pleafure 

 in them, and in dogs, and other tailed animals. 

 But cats gently extend and contract their paws when 

 they are pleafed, and purr by drawing in their breath, 

 both which refembie their manner of fucking, and 

 thus become their language of pleafure, for thefe 

 animals having collar-bones ufe their paws like hands 

 when they fuck, which dogs and iheep do not. 



4. Of Serene Pleafure. 



In the action of fucking, the lips of the infant 

 are clofeci around the nipple of its mother, till he' 

 has filled his ftomach, and the pleafure occafioned 

 by the iiimulus of this grateful food fucceej.s. Then 

 the fphincter of the mouth, fatigued by the con- 

 tinued action of fucking, is relaxed ; and the anta- 

 gonift mufcles of the face gently acting, produce the 

 imile of pleafure : as cannot but be feen by all who 

 are converfant with children. 



Hence this fmile during our lives is aflbciated with 

 gentle pleafure ; it is vifible in kittens, and puppies, 

 when they are played with, and tickled ; but more 

 particularly marks, the human features. For in 

 children this expreffion of pleafure is much encou- 

 la^ed, by their imitation of their parents, or friends ; 



who 



