Chemistry and Physics. Q57 
bodies containing O,, such as benzoic acid, would become interesting, 
as we should reproduce the compounds of the benzoyle series. 
periment confirmed this conjecture. Benzoic acid was violently 
attacked by the perchlorid, with the formation of a substance in every 
respect identical with the chlorid of benzoyle formed from oil of 
bitter almonds. Cinnamic and cuminic acids, in like manner, for 
true chlorids of cinnamyle and of cumyle, which were decom 
slowly by water, rapidly by an et ba solution, and which formed 
The acid of the acetic series did es afford analogous results. 
The rien upon a volatile acid containing Os» was found to be the 
sic acid gave chlorid of anisyle by the loss of O, and the sub- 
stitution sa Cl for H. The substance obtained was perfectly pure, re- 
ormed anisic acid under the influence of alkalies, and gave anisamide 
with ammonia. 
These results are highly curious, for as M. Cahours remarks, the ac- 
tion of amalgam of pot assium, discovered by Melsens, in restoring a 
chlorine compound to its primitive, renders us able to return from ben- 
zoic acid to oil of fee eee cinnamic acid to oil of cinna- 
e€ metamorphoses are in a contrary direction to those 
hitherto possible, the ssi var of phosphorus becomes one of our 
most oat stn leading to the formation of many new and 
interesti G. C. 8. 
Te On the iafometi of Hippuric acid into Benzoic aci cid and 
by carbonate of lead or soda set one after the sbblorits had been sepa- 
ne — the solution, a crystalline substance with a sweet taste, and 
containing nitrogen. This, M. Dessaignes found to be sugar of gel- 
atine. In fact C, ,H,NO, woh ,H,O,=C,H,NO,, and if we add to 
this one and a half equivalents of water, we obtain half an equivalent of 
sugar of gelatine, according to Mulder and Boussingault. essaignes, 
however, thinks that to this residue we must add two equivalents of 
water, and that the true formula of gelatine sugar is C,H, NO,. This 
conjecture is verified by the analysis of Laurent, given on next page. 
The action of nitric, sulphuric and oxalic ~ is attended witha 
similar Ie of the hippuric acid. Finally, potash or 
in excess ces the same effect. Hippuric aed therefore resembles 
the acid ansided: for when —— with acids or alkalies, the elements of 
water are adde d, and it is transformed into an acid and a base contain- 
ing i" which:4 in this case replaces ammon mmonia. The attempt to 
mbine benzoic acid and sugar of gelatine and thus to reproduce hip- 
an ch ~ not successful. G. C.S. 
8 nds. -~Pelouze having obtained a crystalline sub- 
by the - action. a moist chlorine on the oil of bitter almonds, 
Laurent found on analysis that it had. “the composition of benzoic acid, 
Szconp Sertns, Vol. lil, N No. 8.—March, 
