Miscellanies. 385 



Chyle of a dog. Chyle of a horse. 



Carbon, 55.2 - - - - 55.0 



Oxygen, 26.9 - - - - 26.8 



Hydrogen, - - - - 6.6 - - - - 6.7 



Azote, 11.0 - - - - 11.0 



The horse having been fed on vegetables, and the dog on various 

 aliments, the result shows that the food had little or no influence on 

 the composition of this animalized product. 



They found, however, that the excrements of the dog were more 

 of an animalized character than those of the horse. Being dried 

 with the same precautions as the chyle, the results were 



Excrements of the dog. Excrements of the horse. 



Carbon, 41.9 - - - - 38.6 



Oxygen, 28. - - - - 29. 



Hydrogen, - - - - 5.9 _ _ _ _ g.g 

 Azote, - - - - 4.2 - - - - 0.8 



Min. and earthy sub. - 20. - - - _ 25. 

 AfterlStating the nature and offices of the blood, the authors remark 

 that in composition, they found the blood of sheep, rabbits, horses, 

 oxen, dogs, so nearly alike that the differences may be regarded only 

 as errors of experiment. They then performed with the precau- 

 tions before stated, the analyses of arterial and of venous blood. 



Arterial and limpid blood reduced to a fine, Black venous blood reduced to 

 clear, red powder. a brown-red powder. 



Carbon, - - - 50.2 55.7 



Azote, - - - 16.3 ------ 16.2 



Hydrogen, - - 6.6 ------ 6.4 



Oxygen, - - 26.3 -.-..- 21.7 



It thus appears to be proved, for the first time, by elementary anal- 

 yses, what had been admitted by general hypotheses, that the pro- 

 portion of carbon is greater in venous than in arterial blood. But the 

 authors state that tlft change which venous blood undergoes in color 

 by being gently agitated in contact with air, is not owing to its con- 

 version into arterial blood. It is always brownish, less limpid, and 

 when dried, it has the same deep red-brown tinge as dry venous 

 blood, and furnishes by analysis the same results. The conclusion, 

 therefore, is that the vital action, as well as oxygen, is necessary to 

 its transformation into arterial blood. 

 Vol. XXIIL— No. 2. 49 



