BLOOD. 



349 



consequence of the aplastic character of the former constituent, 

 and the minute quantity of blood that could be obtained. 

 The analyses gave : 



On boiling the dried residue of the blood with spirit, after the 

 removal of the fat, I obtained tinctures of a deep red colour, 

 such as would have been yielded by the blood of the mammalia, 

 but they differed in this respect, that they did not become 

 turbid on cooling, and the hsematoglobulin, instead of being 

 deposited in flocks, had to be determined by evaporation. As 

 the flesh of these animals differs from that of the mammaha, it 

 is by no means impossible that there are corresponding differ- 

 ences in the globulin and hsematin. The large amount of al- 

 bumen in the blood of bufo variabilis may perhaps be attributed 

 to the unavoidable mixture of the blood with lymph, and per- 

 haps with mucus. 



Dumas and Prevost analysed the blood of numerous animals. 

 The blood was allowed to coagulate, the clot and serum were 

 separately dried, and the serum that remained entangled in the 

 clot was deducted, and added to the serum that spontaneously 

 separated. The fibrin was not determined. 



Water. Solid constituents. Blood-corpuscles. Residue of serum. 



