9ß J. SAKURAI. 



(a) Comhinalion inth acids : 



H.C-NH3 H.C-XHsC] 



I I + HCl = I 

 OC-0 OC-OH 



H.C - NH3 ILC - NH3 - CO 



2 I I + HCl = J I 



OC-Ü OC-OH CIH3N-CH2 . 



(b) Comhination with metallic salts : 



H0C-NH3 H0C-NH3.NO3 



I + Kîs'03 



OC-O oc- OK 



wherens witli the open formula for e'lycocoll, we must assume, in this 

 case, tliat a douille decom]:)o.sition first takes place with formation 

 of potassium amido-acetate and nitric acid and that, then, the latter 

 unites to the amido_o-en group, unless we o'ive the irrational formula, 

 C00H.CHo.NH.,.K.XO3, to this compound. 



(c) Conversion into the InjJrochloride of an amido-acetic ester : 



HX-XH, ILC-XHsCl 



I I + ROh"" +■ EiCl -^ I + HoO . 



OC-0 ' OC-OR 



(d) Conrersion into (jhjcoJJie acid : 



Altliough this change is usually regarded as consisting in the direct 

 re])]acement of the amidogen group hv hydroxyl and, therefore, may 

 appear as otfering a difficult}^ to the closed formula, the first action of 

 nitrons acid must he admitted to be anah^ofous to that which occurs 

 between glycocoU and liydrochloric acid, namely tlie formation of an 

 addi tion compound — 



ILC -ML H.C-ML.XO., 



I I + H.XO,. - I 

 OC-0 " OC-OH : 



