ANIMAL CHEMISTRY. 



NOTE (28,) p. 44. 



According to the analyses of Playfair and Boeckmann, 

 0-452 parts of dry muscular flesh gave 0-836 of carbonic acid. 

 0-407 ...... 0-279 of water. 



0-242 ...... 0-450 of carb. acid and 0-164 water. 



0191 ...... 0-360 . . . 0-130 



0-305 of dried blood gave 0-575 carbonic acid and 0-202 of water. 

 0-214 . . . 0-402 . . . 0-138 

 ] -471 of dried blood, when calcined, left 0-065 of ashes=4-42 pr. cent 

 The dried flesh was found to contain of ashes 4-23 pr. cent. 

 The nitrogen was found to be to the carbon as 1 to 8 in equivalents. 



Hence 

 Flesh (beef.) Ox-blood. Blood. 



Playfair. Bceckmann. Playfair. Boeckmann. Mean of 2 analyses. 



Carbon 51-83 51-89 51-95 51-96 51-96 



Hydrogen 7-57 7-59 7-17 7-33 7-25 



Nitrogen 15-01 15-05 15-07 15-08 15-07 



Oxygen 21-37 21-24 21-39 21-21 21-30 



Ashes 4-23 4-23, 4-42 4-42 4-42 

 Deducting the ashes, or inorganic matter, the composition of the organic part is, 



Carbon . . . 54-12 54-18 54-19 54-20 



Hydrogen . . . 7-89 7-93 7-48 7-65 



Nitrogen . . 15-67 15-71 15-72 15-73 



Oxygen . . . 22-32 22-18 22-31 22-12 



This corresponds to the formula 



C 48 . ..... 54-62 



H 39 ...... 7-24 



N ..... 15-81 



O 15 ...... 22-33 



NOTE (29,) p. 44. 



COMPOSITION OP CHOLEIC ACID, a 



Calculated 

 Demargay. Dumas. C76H66N3O22. 



Carbon . . 63707 63-5 63-24 



Hydrogen . . 8-821 9-3 8-97 



. Nitrogen . . 3-255 3-3 3-86 



Oxygen . . 24.217 23-9 23-95 



a Ann. der Pharm., XXVII., 284 and 293. 



NOTE (30,) p. 44. 



COMPOSITION OF TAURINE AND OP CHOLOIDIC ACID. 



1. TAFRINE. a 



Calculated. 



Demargay.* Dumas. C4H7NO!0 



Carbon . . 19-24 19-26 19-48 



Hydrogen . . 5-78 5-66 5-57 



Nitrogen . . 11-29 11.19 11-27 



Oxygen . . 63-69 63-89 63-68 

 a Ann. der Pharm., XXVII., 287 and 292. 



2. CHOLOIDIC ACID, a 



Demargay.* 



A . Dumas. Calculated. 



I. jl * C36H56012 



Carbon . . 73-301 73-522 73-3 74-4 



Hydrogen ' . 9-511 9-577 9-7 9-4 



Oxygen . . 17-188 16-901 17-0 162 



a Ann. der Fharm., XXVII., 289 and 293. 



In reference to the researches of Demargay on the bile I would make the following ob- 

 servations. 



The matter to which I have given the name of ckoleic acid is the bile itself separated 

 from the inorganic constituents (salts, soda, &c.) which it contains. By the action of 

 subacetate of lead aided by ammonia, all the organic constituents of the bile are made to 

 unite with oxide of lead, with which they form an insoluble, resinous precipitate. The 



