A16 Scientific Intelligence. 
sponds to 2 vols., as is the case with ethyl, methyl, &c. Allyl unites 
directly with chlorine, bromine and iodine; the bromid and iodid have 
the formulas CeHsBr2 and CeHsIz. As the formula of the iodid of 
allyl CeHslez differs from that of iodid of propylene by one equivalent 
of iodine only, the authors sought, but without success, to transform 
one of these bodies into the other. These facts appear to show that 
the two iodids do not contain the same radical and there may therefore 
be two isomeric bodies having the formula CeHs. It must be remarked 
however that Cahours and Hofmann give CeHsBr and CeHsl for the 
formulas of the bromid and iodid of acryl and that they make no dis- 
tinction between propylene CeHs and acryl.—Comptes Rendus, xlii, 
. 233. 
7. Researches on tungsten.—Ricue has obtained by the action of 
iodid of methyl upon metallic tungsten the iodid of a base having the 
formula 3(C2Hs)W. The iodid crystallizes from ether in large color- 
less plates which melt at 110° and have the formula 3(C2Hs) 
With oxyd of silver this iodid yields the corresponding oxyd as a 
white powder 3(C2Hs)W. O which unites with acids and forms uncrys- 
tallizable salts.—Comptes Rendus, xlii, 205. 
ew bases containing phosphorus.—The discovery of basic com- 
pounds of phosphorus with methyl corresponding to methylamine, &c., 
is due to Paul Thenard who obtained them by passing chlorid of methyl 
over heated phosphuret of calcium. Cahours and Hofmann have re- 
_ sumed the subject and have prepared many new and interesting com- 
pounds. The authors employed in the first place the action of iodid 
of methyl upon phosphuret of sodium. In this manner they obtained 
the compounds P(C2Hs)2, P(C2Hs)s and P(C2Hs)sl. A better 
method of preparing this class of bodies however consists in acting upon 
chlorid of phosphorus PCls with zinemethyl, zincethyl, éc.; in this 
manner a solid mass is obtained which is a compound of chlorid of 
zinc with triphosphomethylamin, triphosphethylamin, &c. The reac- 
tions are 
PCls+-3(C2HsZn)—3ZnCl+P(C2H2)s 
PCls+-3(CaHsZn)=3ZnCl+P(C4Hs)s 
&e. &c. 
_ When these compounds are distilled with caustic potash, liquids are 
obtained which have the smell of the arsenic bases and are strongly 
the reaction is less distinct.— Comptes 
