EFFECTS OF THIRST, ETC., ON EMYS TERRAPIN. 



45 



400 grains of blood contained — 



("Water 

 Moist blood-corpuscles 200.00-' ,., 



(Solid constituents 



Liquor sanguinis 



200.00 



(Water . 



(Solid constituents 



150.00 



50.00 



110.23 



29.17 



If this terrapin had originally an equal amount of blood of the same chemical 

 constitution with that of the terrapin in the normal state, used in the preceding 

 analysis, then it had lost, during forty days, 600 grains of blood, which had the 

 following composition : — 



600 grains of blood, consumed during starvation, contained — 



Water ......... 525.05 



Blood-corpuscles (dried organic constituents) . . . .56.39 



Albumen, fatty and extractive matter ..... 10.07 



Fibrin 2.04 



Fixed saline constituents ...... 6.45 



Solid constituents in 600 grains of blood .... 14.95 



" " in seruui of 600 grains of blood . . . 11.09 



600 grains of blood contained — 



Moist blood-corpuscles 241.28 •<_.,.," 



(.Solid constituents 



Liquor sanguinis 



352.12 



(Water . 



(Solid constituents 



185.46 

 61.82 



339.59 

 13.13 



25. Blood of a female Salt-water Terrapin {Emys terrapin), which had been kept 

 without food and drink for fifty-seven days. 



Weight of terrapin, June 21 



August 16 . 

 Loss of weight during fifty-six days 



12.280 grains. 

 9.255 " 

 3.025 " 



In fifty-six days this Chelonian had lost one-fourth of its original weight.. The 

 loss each hour during its starvation, was ^-^ of the original weight of its body. 



This terrapin had just deposited its eggs when captured, and this will account 

 for its living so great a length of time without food or drink. 



The female terrapins that were captured before their eggs were deposited, 

 refused to lay, in confinement, became feeble, and died in the course of two or 

 three weeks. This was, without doubt, the result of the anxiety and irritation, 

 occasioned and kept up by the eggs within them. 



The blood-corpuscles, under the microscope, presented no unusual appearance, 

 showing that a free interchange between the liquor sanguinis and their contents 

 had been carried on continuously. 



Amount of blood obtained 



Probable amount of blood consumed 



Solid constituents iu 1000 parts of blood 

 " " " serum 



" in serum of 1000 parts of blood 



Water in 1000 parts of blood 

 " " serum 



200 grains. 

 800 " 

 255.22 



111.96 



92.82 



144.18 



888.04 



