172 CHEMISTRY OF THE PROTEIDS CHAP, iv 



in the mycoproteid, which Nencki 1 prepared from anthrax bacilli. 

 Whether fibroin and conchiolin contain sulphur is not stated. 



On decomposing albumin with pepsin-hydrochloric acid, cystin is 

 found only in certain complexes ; proto- and hetero-albumose contain 

 some sulphur giving the lead reaction, 2 but most of the sulphur is con- 

 tained in one of the deutero-albumoses, which Pick 3 has therefore called 

 thio-albumose. 



1 M. Nencki, Ber. d. deutsch. chem. Ges. 17. II. 2605 (1884) ; Nencki and F. 

 Schaffer, Journ. /. prakt* Chem. [2], 20. 443 (1879). 



2 E. P. Pick, Zeitschr. f. physiol. Chem. 28. 219 (1899). 



3 E. P. Pick, Hofmeister's Beitr. 2. 481 (1902). 



