116 Scientific Intelligence. 
contained ethyl benzoate, on being treated with potassium hydrate, 
evaporating to dryness to remove the alcohol, re-solution in water, 
and precipitation with hydrochloric acid, afforded benzoic acid 
abundantly. The reaction, therefore, is as follows: 
©,U,Br+€6 | O°? 4s 4 Na,=NaCl+NaBr+€,H,(€006,H,) 
By using mono-bromo-toluol (€,H, | eae) toluic acid 
? 
(€,H, | oak €,H,] with a trace of another acid perhaps iso- 
meric with it, was obtained. With the isomeric benzyl bromid 
(C,H, (CH,Br)) the reaction yields a more complicated product. 
fn a more recent paper, Wurtz shows that the acid mentioned 
above as obtained simultaneously with the toluic, is iso-toluic acid ; 
whole mass was solid. This residue was extracted with ether, 
the ether distilled off till the temperature rose to 180° uid 
insoluble in cold water, and but little soluble in hot ; alcohol and 
ether dissolve it readily. At 84° it melts and at a higher tempera- 
ture distils. Its vapors are aromatic and irritating. To produce 
: that und influence of the sodium, the 
ee by the loss of hydrochloric acid, becomes chloro-di-benzyl 
atte re : 
and that this by the si i s0- 
€,H, en Cl at this by the simultaneous action of the, 
dium and the ethyl chlorocarbonate becomes ethyl di-benzyl-carb- 
oxylate eo . * =f) Zt ivi. 1298: 
y €,H, CHEOO(€,H,). omptes Rendus, \xviii, ; 
Ixx, 350. 
obtained, yielding when treated with sodium-amalgam, two meta- 
meric acids of the composition €,H,@,, of which one was solid 
undertook a confirmation of this supposition. Having prep 
the volatile acids from four pounds of Croton oil, he finds that no 
volatile acid of the composition €,H,®, exists in this oil, and 
that the solid acid contained in it 18 not angelic acid; and there- 
