m OF INSTINCT. SECT. XVI. 8. 2, 



fit for perceiving fuch odours, and is preferved from being in- 

 jured by thofe that are more ftrong or corrofive. M my other 

 receptacles of peculiar fluids difgorge their contents, when the 

 ends of their duels are ftimulated ; as the gall bladder, when the 

 contents of the duodenum ftimulate the extremity of the com- 

 mon bile duel ; and the falivary glands, when the termination 

 of their duels in the mouth are excited by the Itimulus of the 

 food we mafticate. Atque veficulse feminales fuum exprimunt 

 fluidum glande penis fricata 



The coldnefs and drynefs of the atmofphere, compared w?th 

 the warmth and moilture, which the new-born infant had jull 

 before experienced, difagreeably affect the aperture of this lav-ry- 

 inal lack : the tears, that are contained in this fack, are poured 

 into the noftrils, and a further fupply is fecreted by the laery- 

 mal glands, and diffufcd upon the eye-balls ; as is very vifible in 

 the eyes and noflrils of children foon after their nativity. The 

 fame happens to us at our maturer age, for in fevere frofty 

 weather, Snivelling and tears are produced by the coldnefs and 

 drynefs of the air. 



But the lacrymal glands, which feparate the tears from the 

 blood, are fituated on the upper external part of the globes of 

 each eye $ and, when a greater quantity of tears are wanted, we 

 contract the forehead, and bring down the eye-brows, and ufe 

 many other diftortions of the face, to comprefs thefe glands. 



Now as the fuffocating fenfation, that produces reipiration, is 

 removed almoft as foon as perceived, and does not recur again : 

 this difagreeable irritation of the lacrymal duels, as it muft fre- 

 quently recur, till the tender organ becomes ufed to variety of 

 odours, is one of the firft pains that is repeatedly attended to : 

 and hence throughout our infancy, and in many people through- 

 out their lives, all difagreeable fenfations are attended with fniv- 

 elllingat the nofe, a profufion of tears, and fome peculiar diftor- 

 tions of countenance: according to the laws of early afTociation 

 before mentioned, which conftitutes the natural or univerfal 

 language of grief 



You may aflure yourfelf of the truth of this obfervation, if 

 you will attend to what pafles, when you read a diiirefsful tale 

 alone , before the tears overflow your eyes, you will invariably 

 feel a titillation at that extremity of the lacrymal duel, which 

 terminates in the noftril, then the compreflion of the eyes fuc- 

 ceeds, and the profufion of tears. 



Linnseus afferts, that the female bear fheds tears in grief j the 

 fame has been faid of the hind, and fome other animals. 



3- Of 



