24 G. W. Hawes—Zonochlorite and Chlorastrolite. 
methyl nitrate on ammonia, the presence of a fraction more or 
less would be unimportant. 
I am inclined to believe that in the manner described, the 
danger in the preparation of this substance will be reduced to 
a minimum, a matter of some importance, as the quantity con- 
sumed in the manufacture of the methyl violet seems likely to 
be increasingly large. A good cooling apparatus between the 
methyl alcohol on sal prsceegente which at 285° C. was gun teers 
converted into methyl ammonias. This method of methyliz- 
ing ammonia may perhaps take the place of mine: it is, how- 
ever, liable to two objections; first, that a sig view propor- 
tion of the methylic alcohol is, according to Herr Weith, lost 
by conversion into methyl ether; secondly, the high tempera- 
ture and pressure rapemans I found ‘that methyl nitrate, 
unlike ethyl nitrate, does not require pressure vessels, but 
reacts at or near he ordinary temperature and pressure. My 
own operations were performed in large stoppered vials set on 
the cooler part of a sand bath, where the temperature did not 
rise above 90°. The loss b sepia of methyl ether may 
perhaps be conipenane by the fact that in the formation of 
methyl nitrate there is always loss of both methylic alcohol 
and nitric nid. 
Philadelphia, May 17, 1875. 
Art. VI.—Contributions from the Sheffield Laboratory of Yale 
College. No. XXXIV.—On Zonochlorite and Chlorastrolite ; 
by GEorRGE W. HAwsEs. 
At the meeting of the American Association for the Ad- 
is ti: of Science which was held at Dubuque, Iowa, in 
1872, Prof A. KE. Foote described “a new hydrous silicate 
pest as pure were ot a pans, dark green color; a 
* Bericht Deut. Chem. Ges., 26th Ap., 1875. 
ssociation 
Proceedings for the Advancement of Science, 
2Ist meeting, August, 1872, p. 65. : 
