Physics and Chemistry. | 421 
or at the nite of ethylene itself, in which case vinyl compounds are 
produced. Two new groups are formed in this manner which may 
formulated as follows: 
IIT. Oxethyl bases. IV. Vinyl bases. 
[(C+H4HO2) HsN]Br [(CaHs) H3N]Br 
ae Br * H GaElsya aN} Bs 
KG 4HsHO2)3H N|Br Cali3)3H N|Br 
(CaHsHO2)4 NIB, HGaEtsy NBs 
From this it appears that the action of dibromid of ethylene upon am- 
monia produces sixteen bases, independently of intermediate and secondary 
proc ducts. much simpler with pr imary, secondary 
and tertiary monamins, the zs class giving twelve, the second eight, and 
the third four bases. The author obtained the clearest expression of his 
theoretical views by opera in ng upon triethylamin, triethylphosphin and 
triethylarsen. When these alkaloids are treated with dibromid of ethy- 
lene the following three pine of compounds are formed : 
trogen group osphorus gro rsenic group 
(ou) "(C1Hs)sN ay’ ’Br2. [catia ‘ (CiHs)6P3} 'Bre. [(CaHay 1)" CaHls)e se]! ’Br2 
Il. Ai aedagi salts, 
Nitrogen scries. horus se Arsenic series. 
[(CsH«Br)(CsHs)sN ] Br. [(Gattesy(CaBte) :P Br. [(C+HsBr)(C1Hs)3As]Br 
Ill. Ovxethyl-iriethylized salts, 
Nitrogen series, Phosphorus series. enic se 
[(C:Hs02)(CsHs)sN ]Br. [(C+H502)(CsHs)3P]Br. [(CuHs0;\ CuHLsyeAs] Br 
IV i fash salts, 
Nitrogen series. Arsenic series. 
{(CsHs)(CsHs)3N ]Br. [(CsE3)(CuHls)pP]Br. [(C+Hs)(C+Hs)sAs]Br 
The bodies belonging to the second group, in Pas presence of other sub- 
stances, yield very elegant reactions, Treatment with monamines, mono- 
phosphines, and monarsines transform them ‘te an inexhaustible group 
of sb pie pe diphosphonium, and diarsonium compounds on the one 
hand, and of pear phospharsonium, and arsammonium salts on 
e i om Polyatomic bases of a higher order result from the action of 
the eeancualias diamines for instance—upon the atic ae 
Salts, 
The derivation of the oxethyl from the bromo-ethyl salts has ed 
been mentioned. We have, for example, the equation : 
[(CsH«Br)(CsHs)3P]Br+ H202= BH-+[ (CaH41102)(CsHs)sP Br. 
The new salt bears the same relation to the bromo-ethy! salt which alcohol 
bears to bromid of ethyl. Hence, as might be expected, the oxethy! salt 
may be eo into the bromo-ethyl salt by distillation with pentabromid 
of phosphoru 
The Brano-atiet brotnids may be r et as See! ce in 
which a molecule of ethyl has been mandate into bromo-ethyl. Nascent 
hydrogen converts the bromo-ethylized bromids into tetrethyl bromids, 
Thus we have: 
