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260 Scientific Intelligence. 
fact that the physical and chemical — of choline and neu- 
rine are precisely alike, Dybkowsky co s their identity by quo- 
ting a statement from Naumann upon bas aaa a of the crys- 
talline form of the two platino-chlorids, The paper ends with some 
reasons for supposing that protagon exists in the bile, and is there 
the os of the choline, as itis known to be of neurine in the 
xtract. 
(a) Tis rational formula established.—In a more recent paper, 
Baxryer (Ann. Ch. a exlii, 322, June, 1867) has published 
some farther j investigation nneurine. Concluding from his pre- 
us experiments, that the platino-chloria was ir in composi- 
sky 8 paper apparently), he examin esoeckotilg. ‘first obtained 
by Liebreich, produced by adding a coltion of Lert o a not too 
dilute abltiont n of neurine chlorhydra is precipitate consists 
of yellow microscopic needles, difteultly soluble in cold but readily 
in hot water, being eee when the a cools in brilliant 
yellow needles: ; and o n long well fo 
prisms. These gave u apie analysis the formula € ‘H, ,NOCI, AuCl, 
the composition being quite uniform. The presence of oxygen ex- 
eludes the vinyl hypothesis and fixes the constitution of neurine as 
trimethyl-oxethyl ammonic hydrate (CH,),(€2H, Lapa 6; 
Se (€H,),(€, Hl, [HO)NCl Todo acid © 
rts. t: 
body into trimethyl-iod ethyl 
porns a (eH) (Cal DNL This iodid corresponds pre- 
cisely with the bromid artificially prepared by Hofmann, and, as 
of siecieleralptomeese’ agen el ©, AA rHOpsH, 
is produced, The oxethyl base is —— sily re-converted in 
oe compound, is easily so converted. The gold salt of the Le 
compound has the formula €,H,,NCl, AuCl, ; hence the salt pre- 
viously described by Baeyer as ©; Hagty OCl, consists of two 
molecules i the chlorhydrate with one of erystal-water (€, H,,N 
Dctas 20. As the oxethyl and the vinyl base differ only by. 
, may not neurine be th sonenst compound with a oosleerts of 
HL) a(€ 06,H,0 Cl, AuCl being 
neurin which one cas " sk eat en is aicibeed 6 by peers The 
em gests its synthesis by the action of me 
thylie road a upon one 
ad 
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