REPORT ON ANIMAL PHYSIOLOGY. 121 



The albumen procured by means of boiling water and cold al- 

 cohol was dried, weighed, and calcined, and its salts determined. 

 Traces of iron were found in such minute quantity in serum, 

 that Lecanu presumes it would not furnish any if it were possi- 

 ble to procure it entirely separate from the colouring matter. 



1000 parts of serum consist, according to this mode of ana- 

 lysis, of First Second 



Analysis. Analysis. 



Water 90600 901-00 



Albumen 7800 81-20 



Organic matters soluble in alcohol and water .. 1-69 2-05 



Albumen combined with soda 2-10 2-55 



Crystallizable fatty matter 1-20 2-10 



Oily matter 1-00 1-30 



Chlorure of sodium ..." 



- potassium 



I 6-00 5-32 



Alkaline subcarbonate 



phosphate.... S 2-10 2-00 



sulphate j 



Subcarbonate of lime -i 



'■ magnesia. . 



Phosphate of lime >■ 0-91 0-87 



magnesia I 



iron J 



Loss 1-00 1-61 



1000-00 1000-00 



These fatty matters will be better understood by considering 

 Lecanu's analysis of the entire blood. He poured alcohol in 

 excess on venous blood, separated the precipitate, and treated it 

 frequently with boiling alcohol, obtaining thus a mass insoluble 

 in alcohol, and a slightly rose-coloured liquor. This liquor, 

 subjected to evaporation, became turbid towards the end of the 

 operation, in consequence of the separation of a fat matter in- 

 soluble in the aqueous product. The residue of evaporation was 

 treated with aether : a portion of it was dissolved. Hence an 

 aethereal solution A, and a residue B. 



A, on spontaneous evaporation, gave a brownish residue, bit- 

 ter, of a consistence similar to that of turpentine, formed of two 

 distinct matters, one solid, the other liquid and like oil. The 

 residue was incompletely soluble in cold alcohol, the solid por- 

 tion remaining attached to the sides of the vessel. When this 

 solid portion had been separated, and dissolved in boiling alcohol, 

 it formed, on cooling, white nacreous laminae, similar to the fatty 

 matter of brain. 



On evaporating the alcohol with which this had been washed, 

 and in which the oily portion of the residue had been dissolved, 

 another residue, of a bitter taste and turpentine consistence, was 

 obtained 3 insoluble in hot or cold water, soluble in alcohol or 



