330 
UREA IN CHYLE AND IN LYMPH. 
cake amongst the chopped mass, which he gave to his stock. 
His experiment proved fatal to his cattle, for in a very short 
time six of them died. 
FATAL EFFECTS OF INOCULATION WITH ANIMAL 
MATTER. 
M. Caillieux, one of the most eminent veterinary sur¬ 
geons of Caen, in France, has lately died from the inoculation 
of virulent matter, after the amputation of his arm had failed 
to arrest the inoculation of the svstem. 
UREA IN CHYLE AND IN LYMPH. 
Guided by the idea that urea must be formed, not, as is 
sometimes thought, in the capillary blood-vessels, but in the 
interior of the tissues themselves, wherever the materials of 
the organism have become useless to life, and are about to be 
eliminated by respiratory combustion, M. Wurtz determined 
to seek for this substance in the chyle and in the lymph. 
The author in the first place examined the chyle of a bull 
upon which a fistula had been opened in the thoracic duct. 
He coagulated about 600 grammes of this liquid by means 
of heat; the filtered liquid was evaporated, the residue treated 
with absolute alcohol, and the alcoholic solution filtered and 
evaporated. The alcoholic extract thus obtained was treated 
with ether as long as anything dissolved ; the ethereal 
solution left to itself soon furnished perfectly colourless 
crystals of urea. M. Wurtz afterwards found urea in the 
lymph of the dog, the cow, the bull, and the horse. In these 
cases he determined also the relative proportions of urea 
contained in the blood, the chyle, and the lymph of the same 
animal by a combination of the methods proposed for deter¬ 
mining urea bv Liebig and Bunsen. The results obtained 
have been tabulated. The tables show that urea exists in 
the three liquids of a cow nourished on dry lucerne; 1000 
grammes of the blood and 1000 grammes of the chyle con¬ 
taining 0*192 grammes of urea, the same quantity of lymph 
giving 0*193 grammes of urea. 
