CIIKMICAI. 15ASIS <>F T11K A.MI.MAI. I'. 



cane--ui!ar .-plits up into ;i molecule ut' de\tio>,- ami a molecule 

 of levulovc, v () ;( molecule of antialhunio-r, fur in-tance. >j.lits tij. 

 into at Ira-t two molecules <f antipeptone, and so on. 



Having thus brielly stated tin- -i.-j^ by which mn ],]. 

 knowledge has been reached of tin- possible product- i.f a diges- 

 tive conversion of prof.-ids. it now remain* to dt-al with the-,- 

 products -eriatim. In so doin^ it will be l..->t tn de-cjil,- tii-t 

 such product- aa arise nio-t largely and characteristically during 

 tin- ai-tion of acids, anil to tn-at of tin- allminosf> and jti-]'toni-s 

 subsequently. 



Ai(tnill>inni't> This sul'stanct- i<. arrordinn to Kiihnc, identical 

 with .Mi-issuer's j.arapcptoiH' It is nio>t ivadilv t'onm.-d l.y the 

 fairly prolonged action of dilute acids at 40, luit it may also 

 inakj' its a])pearauce. but to much smaller extent, during a 

 pel 'tic digestion in which but little ])ei>sin is present. It i- oB- 

 tained, mixed in some cases with variable qua'ntities of an ordi- 

 nary acid alltuniin, Ky neutralising the di^estiiiL; mixture, from 

 which it is thus precipitated. As already stated, it is cliarai t< r- 

 ised Ity the i>n>i>erty that it canliTtt 1>e converted int<i a pei'Tone 

 liy the most lU'oloii'^ed action of even the iim>t active ] < IMII. 

 w'liile on the other hand it is readily ]ie]itonised lv trvi'sin ami 

 yields then^ antipeptone, but im leuein or tyrosi,!!. Apart fn in 

 its lit-haviour with pepsin and trypsin, it resi-ml-les oidina]\ 

 alliumin and syntonin in it-< general i hemieal reactions Hut the 

 latter are chemically quite, distinct from antiall.umate nr jara- 

 peptone, for either of them may be peptoni j -in. and the 



jH-jtiones thus formed may he j.artly made to yield leuein and 

 -in hy the suh<Mjuent action of trj'psin. 



1 Vy_the furtl i er prolonged or active treatment of 

 antialbuniate with acids it is converted into the substance '" "birli 

 Kithne ^ave the name of antialbumid It is in all \ iden- 



tical with the hemijirotein ' of Sdiiit/enber^er, and al-o probably 

 with the dysprptone of Mejssner. so far as the lattei \\as not pi 

 hap- largely compos,-,! of nucleins. It also makes its apix-araiier. 

 but in very small amount, during a peptic digestion, ami in mm- 

 siderable ([iiantity duriiiLT u jiancreatii". It is characterised la its 

 n-latively mvat insolubility in tlilut<' '-'\\\* --""I nlkidis s,, that it 

 separates out as a granular residue during a pancreatic dJL." 

 This iv-idue is readily soluble in 1 p. . rai; 

 tated by neutralisation, it is now soluble in 1 p c sodium 



houate. From either of tlie-e s,,lllt|o||s it I 



precipitated by the addition of a little sudium chloride Injlilut*? 

 alkaline solution (1 p - N.i.cn.) it may b<- 1'artlv c<m\er[e(i 

 into a peptone by the action of trvpsin. durinir wlii<'li i>roce-s the 

 larger )>art sejtarates out into a gelatin" lum or dot. which 



is quite unacted upon by pepsin and can only be ] ! by 



