io2 THE CHEMISTRY OF THE TISSUES AND ORGANS. 
as O027 to - 07. On the other hand, it must be stated that such 
an experienced chemist as Nencki x is still unable to discover any 
urea in muscle. 
Taurine is found in the muscles of horses, fishes, and molluscs. In 
fishes Limpricht 2 found 1*06 per cent. 
G-lycocine is found to the extent of - 39 to 071 per cent, in the non- 
striated muscles of molluscs. 3 
Protir arid is an acid of doubtful nature, described by Limpricht in 
fishes' muscles. 
Inosiiiic acid (C 10 H u N 4 O u ) was first described by Liebig, and 
6 
•0 
T- „♦ 
Fig. 16. — Spherical compound of mercury and creatine. — 
After G. S. Johnson. 
estimated (0-005 to 0-02 per cent.) by Creite. 4 According to Frankel, 6 
it is closely related to carnic acid, to lie immediately described. 
Lecithin and its decomposition products are present in small 
quantities, and are probably derived from the nerves supplying the 
muscle. 6 Small quantities of cholesterin are found as well. 
Carnic acid (Meischsaure) is the name given by Siegfried 7 to a con- 
stituent of muscle, the discovery of which is of great importance. He 
first prepared it from muscle extracts by means of ferric chloride: the 
compound so obtained is called camiferrin; this contains phosphorus as 
1 Nencki and Kowaski, Arch. f. exper. Path 
S. 395. 
-Ann. d. Chem.. Leipzig, Bd. exxvii. S. 1S5 ; c.x.xxiii. S. 300. 
3 Chittenden, ibid., Bd. clxxviii. S. 266. 
4 Ztschr. f. rat. Med., Leipzig, Bd. xxxvi. S. 195. 
8 " Zur Kenntniss der Zerfallproducte des Eiweisses," Wien, 1896. 
® Hoppe-Scyler, "Physiol. Chem.," S. 647. 
7 Ber. d. deutsch. chem. Gesellsch., Berlin, 1894, Bd. xxvii. S. 2762 
Chem., Strassburg, Bd. xxi. S. 360. 
Pharmakol., Leipzig, 1895, Bd. xxxvi. 
Ztschr. f. 2'hysiol. 
