\Y Nitrogen contained in Alimentary Substances. 355 



■ Somewhat more nutritive than milk, and more nearly allied 

 to cheese, is a series of bodies obtained from the lower orders 

 of the animal kingdon. We give here, as examples, the 

 oyster and one or two others. 



IX. O'-ilS grm. of the oyster, Ostrea edulis, gave O'S-tG 

 grm. of ammonicHcbloride of platinum, equal to 5*25 per cent, 

 of nitrogen. • bublyiv ,.1 ^ i 



As this seeiined to us a' very low result, we repeated our 

 analysis, which, however, confirmed our first experiment ; in 

 this case 0*354< grm. giving 0'283 grm. of ammonio-chloride 

 of platinum, equal to 5*07 per cent, of nitrogen. 



X. 0*354 grm. of the yellow matter (liver and bile) from 

 the crabfish, Cancer communis^ gave 0'4'18 grm. of ammonio- 

 chloride of platinum, equal to 7'52 per cent, of nitrogen. 



XL 0*377 g»*m. of the common mussel, Mytilus edulis, gave 

 0'4i9S grm. of ammonio-chloride of platinum, equal to 8*41 

 per cent, of nitrogen. 



XII. 0*308 grm. of the above animal, previously boiled, 

 gave 0*510 grm. of ammonio-chloride of platinum, equal to 

 10*51 per cent, of nitrogen. 



Lit We find that many of the organs of the higher animals, for 

 example, the liver of the ox, nearly agree in the amount of 

 nitrogen with those substances we have just treated of. 



' XIII. 0*432 grm. of ox liver gave 0*726 grm. of ammonio- 

 chloride of platinum, equal to 10*66 per cent, of nitrogen. 

 'X XIV. 0*419 grm. of the liver of the pigeon gave 0*778 grm. 

 of ammonio-chloride of platinum, equal to 1 1*80 per cent, of 

 nitrogen. 



For the reason just mentioned, we here likewise notice the 

 analysis of the muscles of some kinds of fish, which, from 

 being quite saturated with oil, give a low amount of nitrogen ; 

 for instance, that of the eel containing 6*91 per cent., and 

 pork ham, from the large quantity of salt, giving only 8*57 

 per cent. ; but we shall return to these more in detail. The 

 connecting link between the two extremities of the nutritive 

 scale of animal aliments we have formed, appears to be the 

 dried extract of meat, which is sold under the name of port- 

 able soup, or bouillon. t 



XV. 0*441 grm. of portable soup, of an excellent quality, 

 gave 0*845 grm. of ammonio-chloride of platinum, equal to 

 12*16 per cent, of nitrogen. Osmazome is therefore a body 

 rich in nitrogen, probably from containing oxide of proteine, 

 and perhaps also kreatine. 



We shall give our results on the different kinds of flesh, 

 including that of the fishes also, with which we begin. 



Common eel, Anguilla vulgaris. — The flesh of this fish is 

 2 A 2 



