On the Behaviour of the Aldehydes with Acids. 309 
Action of Ethylamine and Trimethylamine upon the bromide of the 
brominated body. 
_ The phenomena observed with ethylamine and trimethylamine 
are perfectly analogous. These substances furnish, with the bromi- 
nated bromide, new and very soluble dibromides, containing re- 
spectively F 
[(C.H.), | P (C,H), | Pp) 
(C, H,)" Br, and | (C, H,)" Br,, 
N * ry N ‘ 
(C, H,) H, (C,H), ¢ NJ 
which, by treatment with oxide of silver, are converted into the cor- 
responding powerfully alkaline oxides 
" " 
(C,H) (C,H) 
fea |e | fea? 
an 
(CH) HL} N| to amd | (GH). {N | lo, 
H, | H, 
and yield, by saturation with hydrochloric acid and precipitation with 
dichloride of platinum, two splendid platinum-salts crystallizing in 
long golden-yellow needles, and containing respectively 
[(C, H,), (C, H,)" H, PN]" Cl, 2PtCl,, and 
[(C,H,), (C, H,), (C, H,)" PN)" Cl, 2Pt Cl,. 
By the formation of the phosphammonium-compounds, the nature 
both of the diammonium- and of the diphosphonium-series appears 
to me finally established. 
It will be interesting to ascertain whether the brominated bromide, 
when submitted to the action of monarsines and monostibines, will 
give rise to the formation of phospharsonium- and phospho-stibo- 
nium-bases. The solution of this question will not be difficult. 
«On the Behaviour of the Aldehydes with Acids.” By A. Geuther, 
Esq., and R. Cartmell, Esq. 
The authors of this paper, with a view of obtaining a series of 
combinations homologous with those already obtained from glycol by 
Wurtz—viz. diacetate of glycol, C, H, O, } O,, and the isomeric body 
C 
4 3-2 
of Geuther from common aldehyde, by the action of anhydrous 
acetic acid,—have subjected common aldehyde, acroleine, and oil of 
bitter almonds to the action of hydrochloric, hydriodic, and sul- 
phurous acids. 
I. Acroleine,—Metacroleine. 
1. Acroleine and Hydrochloric Acid. 
By acting on acroleine, C,H, O,, with dry hydrochloric acid gas, 
a body is formed of the composition C,H, O, Cl, resulting from a 
direct combination of one atom of aldehyde with one atom of the 
acid. ‘This substance is insoluble in water, and can be washed with 
it in order to free it from any excess of acid or acroleine which may 
be still present. By drying, which can only be done over sulphuric 
acid at low temperatures, the body, for which the authors propose 
Phil, Mag. 8. 4, Vol. 19. No, 127. April 1860. ba 
