of Liquids to each other. 31 1 



would diminish, to a sensible extent, the viscosity of 

 this latter liquid ; and I actually found by experiments 

 which I shall have the honour of laying before the Class 

 at some future time in detail, that mixing i part of bile 

 with 1000 parts of water diminishes the adhesion of 

 the particles of water to each other nearly one third, 

 that is to say, in the ratio of 23 to 16 ; and that if i part 

 only of bile be mixed with 30,000 parts of water, the 

 diminution is still very apparent. In a mixture of i 

 part of bile with 300 parts of water, the adhesion in 

 question is reduced almost one half. 



Milk is a liquid which seems to be already elaborated 

 and fitted to serve as nourishment for animals ; now I 

 have found, by decisive experiments, that the adhesion 

 among the particles of this animal fluid is less than that 

 among the particles of water in the proportion of 13 

 to 19!. 



The adhesion of the particles of urine to each other 

 varies considerably. I have found it from 13 i to 16, 

 that of water being 19!. 



Many persons have endeavoured to discover the nature 

 of diseases by the examination of the urine; no one, 

 however, as far as I know, has ever proposed to measure 

 the force of adhesion of its particles to each other, a 

 thing as easy to determine as it is useful to ascertain. 



How interesting it would be to know the force of 

 adhesion of the particles of the gastric juice, of the pan- 

 creatic juice, of the lymph, and of the blood, both in 

 health and in the various diseases ! Of how great im- 

 portance would a knowledge of these facts be to the 

 physiologist and to the physician ! 



How useful it would be for those who study vegeta- 

 ble physiology to know the adhesive force of the parti- 



