BASIS OF TIM: \MMAI. r,m>Y. ,M 



he regards tin- pr.-teids as complex meides : that i- to >. 

 coinl'ination- .if inva with amido-acid- helonoinu t" -e\eral >*fiefl 

 such a- tin- leiicir ami aspartic. 1 In >u|.j...rt ..f this view the 

 \viirk nf (Irimaux- may In- mentioned. I'.v fn-i: 

 tic anhydride aiul urea he ol.tained a MiL-tance iv-riiiM. 

 pr.'t.-id in -evi-ral of its reactions, ami yielding a-pnrtic a-i.l. 

 carbonic acid ami ammonia l.y treatment with haryta. It has 

 not howe , : IH-.-II -hown that thi- >ul>-tanr,- ran !- math- 



and furth.-i, n.. nnr ha- ever -ii--<-r.-d.-d in <.l,tain- 

 ini,' uiva as a direct j.ruduct of tin- decomposition "f a prnti-id. 

 Kurtln-i'. aa a^ninst the view nf the ui'cidc nature uf j.r.'tei.ls, 



AS to the pruliahle nnn-e\i-teii.-f ..f aiiiid.>-.i< id 



itU-s in tile I'l'oteid llinlecule must Hut he In-t xj^ht of. 8 



Tin- ildiT >tati-iuriit> ..t r.e.-liaiii|. 4 and IJittt-r 5 a- t. tin- furiiiatinii 

 of ur.-a from j.roteids l.y the arti"ii \ ]><>taium juTinaii^ana 1 

 MT<>iiei.u>.''' The iii.ot reeriit refutation of their \ie\vs i- due t. 



:i." \\lio tinds that trarr- ..f ^naiiidin may make their a|.|.ear- 

 aiiee luit no urea. Tlii- >ultauce mij^lit ln>\ve\i-r lie ea>ily mistaken 

 for urea >inee it> compoondfl \\ith oxalic and nitric aci.U closely 



.l.h- tlioxi- .,f urea with the >ame aeid>. Although ^uaiiidin 

 when Loilc.l with >nl].hiirie arid ..r l.ar\ ta water readily yield- urea 

 (and -imiiltaneou-ly amnnmia) thi> can in m> \\ay lie taken a- imply- 



i |i..>.-iLle ftiriiiatimi of urea from proteiil- directly. <,uite 

 -tallirn- La-e railed 'ly.-atin,' which readily \iidil- un-a 

 when Loileil with Laryta water," has Leeii isolated from aimm^ the 

 products of the decompo>ition <.f ea-ein Ly liydn.cliloric acid and 

 .-hloridr of /inc. Tin- formula "f tlii- La.-e i> u'i\en - < II \ . 

 thu- placing it in .-lo>e eompn.-it ional relation-hip with K 

 ( ,11 \ i >. and Kreatinin C.I^N.O. 



-I :is yet be said that we p,,>-,-s> anv ival km-ul 



nf the <-MM-titUti"M 'f pmtei.!-. alld the i|Urstinll will jmilialily 



:M unsnlv.-d iiniil some utin-ly m-w dej.aitnre i- ma.le in 

 \in-_,' the ju-nlih-in, "i uniil some ne\\ |.n.p.-it\ "f pioteid-i- 



d l.v which theii al.M.lnte purity niav l.e det,-rmii 

 th,. , preliminary In the whu'le in\ i-t i-at inn. The 8O- 



crystallised ]n-..teid- (see :d..,ve, p. r.) have nol 



, s-l.ut/,, attcmpu u. yndMllM ptoteid*. Me C'o/rf. 



..i 

 i;.i XXM 



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I I XMM ' 



1219. 



urakt. <! I ' 



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