10 



BLOOD OF SAURIANS. 



Specific gravity of its blood 

 Solid constituents in 1000 parts of blood 

 " " " serum 



in scrum of 1000 parts of blood 

 Water in 1000 parts of blood 

 " " serum 



1000 parts of blood contained — 



Water ..... 



Blood-corpuscles (dried organic constituents) 

 Albumen, fatty and extractive matter 

 Fibrin ..... 

 Fixed saline constituents 



1000 parts of blood contained — 



Moist blood-corpuscles 488.80 j Wator - 



(Solid constituents 



Liquor sanguinis 



511.20 



(Water . 



(Solid constituents 



1036 



181.70 



65.78 



57.62 



818.30 



934.22 



818.30 



118.34 



55.91 



1.88 

 5.57 



366.60 



122.20 



451.70 



59.50 



8. Coluber constrictor, Linnams (male). Black Snake. May 17. 



This snake had been kept without food for ten days. 



This is one of the swiftest and strongest of all our North American Ophidians. 

 I have seen it attack the Kattlesnake, and sever the head almost completely from 

 the body. In its habits, food, and swift motions, it resembles very much the Coach- 

 whip Snake (Psammophis jlagelliformis). 



Amount of blood obtained 

 Solid constituents in 1000 parts of blood 



" serum 

 in serum of 1000 parts of blood 

 Water in 1000 parts of blood 

 " " serum 



1000 parts of blood contained — 



Water ..... 

 Blood-corpuscles (dried organic constituents) 

 Albumen, fatty and extractive matter 

 Fibrin ..... 

 Fixed saline constituents 



1000 parts of blood contained — 



Moist blood-corpuscles 469.20 | Water ■ 



(Solid constituents 



Liquor sanguinis 



530.80 



(Water . 



(Solid constituents 



350 grains 

 211.37 

 101.42 

 89.01 

 788.63 

 898.58 



788.63 



112.22 



85.32 



5.00 



8.77 



351.90 



117.30 



43&73 



94.07 



Blood of Saurians. 



0. Alligator Mississippiensls, Daudin (female). Alligator. April 30. 

 The blood was abstracted a short time after the animal was shot in a small stream. 

 The reptile was remarkably fleshy, and the abdominal cavity, especially about 

 the kidneys, was lined with fat. 



