56 



EFFECTS OF THIRST, ETC. 



, ON EMYS S ERR AT A. 



200 grains of blood contained — 



Water . . . .• 



Blood-corpuscles (dried organic residue) 

 Albumen, fatty and extractive matter 

 Fibrin .... 

 Fixed saline constituents 



200 grains of blood contained — 



Moist blood-corpuscles 62.60 



Liquor sanguinis 



(Water . 



1 Solid constituents 

 j3^_4 (Water. _ . 



(Solid constituents 



154.68 

 14.58 

 26.90 

 1.30 

 2.54 



46.95 

 15.65 

 101.13 

 29.61 



Calculated amount of blood lost during thirty-eight days of starvation and thirst, 

 1800 strains. 



203.86 

 62.69 



Solid constituents in 1800 grains of blood 



" " scrum of 1800 grains of blood 



1800 grains of blood contained — 



Water ..... 

 Blood-corpuscles (dried organic constituents) 

 Albumen, fatty and extractive matter 

 Fibrin ..... 

 Fixed saline constituents 



1800 grains of blood contained — 



Moist blood-corpuscles 561.56 



(.Solid constituents 



Liquor sanguinis 1238.44| ^ '"^^^^ 



( Solid constituents 



1596.14 

 146.16 

 48.42 

 0.18 

 1.90 



421.11 

 140.39 

 1114.91 

 63.41 



Blood of a Male EniT/s sermta, which had been kept without food and drink 



for forty-nine days. 



Weight, May 25 

 June 9 



IjOss of weight in forty-five days 



11.191 grains. 

 14.400 " 

 3.391 " 



In forty-nine days this Chelonian lost one-fifth of its original weight. Loss of 

 weight daily, 75jYo- grains. Loss of weight hourly, 3^^% grains = -g-gVyth of 

 original weight of its body. 



All the terrapins {Emys serrata) heretofore examined were females, whose 

 ovaries and oviducts contained from eight to twelve hard, and innumerable soft 



The development and nourishment of these eggs consumed the blood, and, conse- 

 quently, they sank more rapidly under starvation and thirst than this male, which 

 had nothing to support but his own body. 



The desire to deposit their eggs induced restlessness. They were continually 

 endeavoring to escape from their confinement. This is in conformity with a law 

 of the animal economy that the exertion of force is always attended by a simulta- 

 neous chemical and physical change of the organic elements of structure and 

 nutrition. The amount of these changes corresponds with the force exerted. 



