EFFECTS OF THIRST, ETC., ON E1IYS TERRAPIN. 



47 



stituents in 1000 parts of blood, alone, were considered; for the blood-corpuscles 

 and all the organic and inorganic constituents in this case would appear to have 

 increased rather than diminished during starvation. A correct view of the effects 

 of starvation can only be obtained by ascertaining tbe absolute amounts of blood 

 and its constituents existing in these reptiles during different lengths of starvation. 



By comparing these results with the quantity and constitution of blood in 

 animals in a normal condition, not deprived of food or drink, we can calculate, 

 approximately, the amount of blood and its various constituents that have been 

 consumed during starvation, to supply the wastes of the tissues and keep up the 

 animal temperature. 



Tbe following tables give a condensed view of the effects of starvation. They 

 must not be considered absolutely correct, but only as an approximation to the 

 truth. 



It would be impossible to determine these changes with absolute accuracy, 

 because differences in the amount and constitution of the blood always exist in 

 different individuals. 



I. — Tables showing the Changes in the Relative Amounts of the Organic and Inorganic Constituents 

 of the Blood of Salt-water Terrapins (Eniys terrapin), during different periods of Starvation and 

 Thirst. The numbers represi nt the amount existing in 1000 parts of blood. The changes, there- 

 fore, are relative, and not absolute. 



WATER AND SOLID MATTERS OF BLOOD AND SERUM. 



Period of 



starvation and 



thirst. 



1st female terrapin 

 2d " 

 3d " 



Water in 1000 

 partsof blood. 





,„ , . ,nnn'c 11 i-i Solid constitu- 

 Water in 1000 Solid constitu-, euts fa ]Q00 



parts of se- entsinlOOO &e _ 



rum. partsof blood. r 



rum. 



Solid constitu- 

 ents in serum 

 of 1000 parts 

 of blood. 



12 hours 

 40 days 

 57 " 



845.28 

 800.59 



144.18 



956.11 

 920.50 



888.04 



154.12 

 199.41 

 255.22 



43.83 



19.50 



111.96 



38.15 

 69.15 

 92.82 



CONSTITUENTS OF 1000 PARTS OF BLOOD. 



