WATER. 33 



adding water containing about the proportion of salt which 

 exists in the plasma. 



It seems clear, then, that water is a necessary element of 

 all tissues, and is especially important to the proper constitu- 

 tion of organic nitrogenized substances ; that it enters into 

 the constitution of these substances, not as pure water, but 

 always in connection with certain inorganic salts ; that its 

 proportion is confined within certain limits ; and that the 

 quantity in which it exists, in organic nitrogenized substances 

 particularly, is regulated by the quantity of salts which en- 

 ter, with it, into the constitution of .these substances. 



The quantities of water which can be driven off by a mod- 

 erate temperature (212 Fahr.) from the different fluids and 

 tissues of the body, vary of course very considerably, ac- 

 cording to the consistence of the parts. The following is a 

 list of the quantities in the most important fluids and solids : 



Table of Quantity of Water. 



Parts per 1,000. 

 f In Enamel of the Teeth 2 



" Epithelial Desquamation 37 



" Teeth 100 



" Bones 130 



" Tendons (Burdach) 500 



" Articular Cartilages 550 



" Skin (Weinholt) 575 



" Liver (Frommherz and Gugert) 618 



" Muscles of Man (Bibra) 725 



I " Ligaments (Chevreul) 768 



" Mean of Blood of Man (Becquerel and Rodier) 780 



" Milk of Human Female (Simon) 887 



" Chyle of Man (Rees) 904 



" Bile..., 905 



" Urine 933 



" Human Lymph (Tiedemann and Gmelin). 960 



" Human Saliva (Mitscherlich) 983 



" Gastric Juice 984 



" Perspiration 986 



" Tears 990 



" Pulmonary Vapor 997 



1 This table is made of selections from the table of Robin and Vexdeil taken 

 from various authors. 

 3 



