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Approved process for Nitric Ether. 241 
Arr. V.—Process for Nitric Ether, or Sweet Spirits of Nitre, by 
means of an approved apparatus; by R. Harr, M.D., &c. &c. 
_ From the Transactions of the American Philosophical Society. 
Tue reaction of nitric acid with alcohol is so difficult to regulate, 
in the ordinary mode of making nitric ether, in which the whole of 
the materials are mingled at the outset of the process, that I was in- 
duced, about twelve or fifteen years ago, to introduce an apparatus 
in which they were gradually added together within a glass bottle, 
by means of glass funnels with glass cocks. 
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A ES ‘ —v\ | 
Subsequently I adopted the more simple apparatus represented in 
the accompanying figure. 
Providing a bottle with three tubulures, let one tubulure commu- 
nicate, by means of a recurved tube A, with another tube passing 
perpendicularly through an open-necked inverted receiver C, and 
entering a bottle surrounded with ice and salt, occupying a suitable 
