Chemistry and Physics. 51 
series. Wetherill’s ether, however, is markedly different i: its 
properties. It is an oily, colorless liquid, with an odor like pep- 
permint, of sp. gr. 1°12, and which can be distilled, oily drops 
passing over at 110° to 120°. To ascertain which of these bodies 
was the true ether, the ethers themselves as well as the acids 
derived from them, were treated with potassium sulphydrate. In 
this way, Baumstark’s body was proved to be the true ethyl sul- 
phate, retherill’s being its isomer as above. Similar ethers were 
obtained with = srt nitro-phenol and thymol.—J/. pr. Ch., U, xiii, 
158, March, 1 G. F. B. 
2. Anth chitaels and Isoanthraflavic acids,—Scuunk and 
Roemer have detected in crude artificial alizarin a new acid, 
sere a sintatiols of water. The salts of the new acid were pre- 
hee and analyzed, and compared with those of anthraflavic acid. 
ese as well as the substitution derivatives showed marked dif- 
ferences between the two bodies. Both, it should be remembered, 
rot isomeric with alizarin.— Ber. Berl. Chem. Ges. ix, i, March, 
876. 
3. On Sulphonaphthalide—Cuxve has examined the substance 
obtained by Berzelius in 1837 by the action of sulphuric acid on 
naphthalene, and which he called sulphonaphthalide. C vecallisid 
from absolute alcohol, it appears in perfectly white needles, often 
some centimeters long. it melts at 175°5°, is insoluble in water, 
ultly so in alcohol and ether, very soluble in benzene. 
Analysis gives it the formula C,,H,,SO,, or 80, {6 ah 
oO 
Heated with = horic chloride and with ammonia, it yields ¢ 
hich ether extracts a solid body tons nae: 
a Cl, leaving behind the amide of 6-naphthylsulphurous 
ai ‘che clio being C, gH,S0,CL—Buld. Soe, Uh UI, xxv, 
256, March, 1 oni G. F. 
Evolution of pe fe by the action of Zine upon newtrat 
e.—For the preparation of 4 considerable quantity 
of finely divided covet by ‘Schif's method, Lorman Meyer 
heated to 60° C. a mixture ve copper sulphate crystals, metallic 
zine and water, re wer a rapid evolution of pure hydrogen 
4 fact noted in 1840 by Leykauf. Further experiments ts showed 
that the nt at iy of hydrogen takes place at Sdleary tempera- 
i 
