Chemistry and Physics. 389 
propylated trioxybenzene, or dimethyl propyl-pyrogallate. On 
O, and thie on reduction a 
hydroquinone C, » § The th 
wood tar was isolated with difficulty and had the formula 
affording a crystallized substance of the formula C,H,O,, which 
was pyrogallic acid (pyrogallol). 
was the dimethyl ether of pyrogallic acid C,H, OCH,. By the 
action of oxidizing agents, most conveniently potassium dichro- 
mate, it is converted into the magnificent steel-blue needles of 
cedriret. In proof of this as the origin of the cedriret of Reichen- 
bach, Hofmann prepared this dimethyl ether synthetically and 
found that it gave identically the same product on oxidation,— 
Ber. Berl. Chem. Ges., xi, 329, Feb. 1878. G. F. B. 
. he Constituents of Corallin——ZvuLKowsky has ex- 
amined the corallin of commerce and finds it to be a mixture of 
at least six different bodies: 1st, a coarsely crystalline garnet-red 
body with blue luster, of the composition C,,H,,0, ; 2d, a deriva- 
this, a deep red amorphous powder, showing metallic luster, re- 
8. On Curarine.—Sacus has examined the active substance of 
curare and finds it to be an alkaloid of the composition C,H, 
Ww 
Am, Jour. Sc1.—THIRD ——” Vou. XV, No. 89.—May, 1878. 
