720 PROTEIDS. [Apr. 



DECOMPOSITION OF PROTEIDS BY DIGESTION. 



Albumin. .S 



( Antialbumose. Hemialbumose. 



, J . J .-, 



Antipeptone. Antipeptone. Hemipeptone. Hemipeptone. 



Leucin. Tyrosin. Leucin. Tyrosin. 

 etc. etc. f 



DECOMPOSITION BY ACIDS. 



1. 

 By -25 p. c. HC1 at 40 C. 



Albumin. 



I 



Antialbumate. Hemialbumose. 



Antialbumid. Hemipeptone. Hemipeptone. 



2. 



By 35 p. c. H 2 S0 4 at 100 C. 

 Albumin. 



Antialbumid. Hemialbumose. 



Hemipeptone. Hemipeptone. 

 Leucin. Tyrosin. etc. Leucin. Tyrosin. etc. 



CLASS VIL Lardacein, or the so-called amyloid substance. 



The substance to which the above name is applied, is found 

 as a pathological deposit in the spleen and liver, also in numerous other 

 organs, such as the blood-vessels, kidneys, lungs, <fec. 



It is insoluble in water, dilute acids and alkalis, and neutral saline 

 solutions. 



In centesimal composition it is almost identical with other proteids 1 , 

 viz. : 



0. and S. H. N. C. 



24-4 7-0 150 53-6 



The sulphur in this body exists in the oxidised state, for boiling 

 with caustic potash gives no sulphide of the alkali. The above results of 



1 C. Schmidt, Ann. d. Chem. u. Pharm. Bd. ex., S. 250, and Friedreich and 

 Kekule, Virchow's Archiv, Bd. xvi., S. 50. 



