308 GLYCOCINE. [BOOK n. 



masses, which are readily soluble in alcohol and ether, but not in water. 

 It exhibits Pettenkofer's reaction. When boiled with hydrochloric acid 

 it yields an anhydride, hyodyslysin 



Chenocholalic Acid, C^H^C^. 



Is obtained by decomposing taurochenocholic acid by boiling with 

 barium hydrate. The acid occurs usually in a resinous form, but has been 

 obtained in crystals by adding water to the alcoholic solution, the crystal- 

 lisation taking place after a long period. 



Chenocholic acid is insoluble in water, but readily soluble in alcohol 

 and ether. Its barium salt (C 2 7H 43 O 4 ) 2 Ba is insoluble in water. Cheno- 

 cholalic acid exhibits Pettenkofer's reaction 1 . 



Fellic Acid?? 



According to Schotten 2 , there is obtained by the decomposition of the 

 bile acids of man, in addition to cholalic acid, an acid to which he assigns 

 the formula C23H 40 O 4 . 



Choleic Acid, C 25 H 42 O 4 ?? 



According to Latschinoff 3 , when the bile acids of the ox are decom- 

 posed, in addition to normal cholalic acid, there is obtained an acid to 

 which he has assigned the above name and formula, and the barium salt 

 of which is insoluble. Further and independent researches are needed in 

 order to prove whether this acid is not a secondary product and whether 

 the above formula correctly represents its composition. 



SECT. 7. THE AMIDO-ACIDS WHICH RESULT FROM THE DECOMPO- 

 SITION OF THE CONJUGATED BlLE ACIDS: GLYCOCINE AND 



TAURINE. 



Glycocine* (C 2 H 5 N0 2 ). 

 (Amido-acetic acid CH 2 (NH 2 )COOH.) 



Occurrence Glycocine has only been found uncombined (0*4 



0*7 per cent.) in the muscular tissue of Pecten irradians 



(Chittenden) 5 . It is obtained as a primary product of the de- 



1 Consult on Chenocholalic acid, Heintz u. Wislicenus, Poggend. Annalen, Vol. 

 cvni. p. 547. Otto, Zeitschrift f. Chemie, 1868, p. 635. 



2 Schotten, ' Zur Kenntniss der Gallensauren.' Zeitschrift f. physiol. Chemie, 

 Vol. x. (1886), p. 175, and Ueber die Sauren der menschlichen Galle.' Ibid. Vol. xi. 

 (1887), p. 268. 



3 P. Latschinoff, ' Ueber eine der Cholsaure analoge neue Saure.' Ber. d. d. 

 chem. Gesellsch. Vol. xvm. (1885), p. 3039: Vol. xix. (1886), p. 1140 : Vol. xx. (1887), 

 p. 1043. 



4 Originally glycocoll (7X1^5, sweet, and *6XXa, glue), from the fact of its being a 

 sweet body obtained by the decomposition of gelatine (or glue). 



5 Chittenden, " Contributions from the Sheffield Laboratory of Yale College," No. 35. 

 From the American Journal of Science and Art, Vol. x. July 1875. The Author has 

 not seen the original paper, of which a long abstract appeared in Maly's Jahresbericht, 

 Vol. v. p. 204 et seq. 



