326 New Patents. [Aprin, 
well-stopped phial. At the end of that time a considerable number 
of crystals had separated from the oil. These crystals had the fol- 
lowing properties :— ; 
A strong smell of peach blossoms; a taste at first sweetish, then 
sharp and burning. The crystals were confused ; but some of them 
were translucent plates. The specific gravity was 1-300. When 
thrown upon the surface of water, it- moved about with great 
rapidity, like camphor in the same circumstances. Potash digested 
with this substance threw down Prussian blue from persulphate of 
iron. When exposed to the sun for some days, it separated from 
the oil with which it was contamina.ed. It then became white, Jost 
its smell, was insoluble in water, but soluble in alcohol. The 
alcoholic solution, by spontaneous evaporation, gave very brilliant 
four-sided prisms, whose bases were squares. It was not acted on 
by nitric acid in the course of 24 hours. Brugnatelli considers this 
substance as a combination of prussic acid and oil of peaches. (Ann. 
de Chim. vol. xcvi. p. 96.) 
ArticLe XII. 
New Patents. 
Mareurs DE CHABANNES, Russel - place, Fitzroy-square, 
London; for a method of conducting the air, and regulating the 
temperature, in houses and other buildings, and warming and cool- 
ing either air or liquids in a much more expeditious, and conse- 
quently less expensive, manner than hath hitherto been done within 
this kingdom, which is applicable to various useful purposes, and 
will be of great public advantage. Dec. 5, 1815. 
~Curistopa Dia, Frith-street, Soho, London ; for certain im 
provements in the method or apparatus of distillation. Dee. 5, 
1815. 
~ James Lex, Old Ford, Middlesex ; for certain improvements in 
the methods before invented by him of preparing hemp and flax ; 
and by which also other vegetable substances may be rendered ap- 
plicable to many of the purposes for which hemp and flax are used. 
Dec. 5, 1815. j 
SamvueEt Creca, of the gas works, Peter-street, Westminster ; 
for an improved gas apparatus. Dec. 9, 1815. 
Davis RepmunD, Johnson’s-court, Fleet-street, London ;.for 
a machine for the manufacture of corks and bungs. Dec. 9, 1815. 
Rosert Kiyper, Hill-street, Liverpool; for a method,of pro- 
pelling ships, boats, and other vessels. Dec. 9, 1815. 
Rover? Dickson, Great Queen-street, Lincoln’s Inn-fields, 
London; for-an improvement in the hooping.of barrels. .Dec. 17, 
1815. " 
