390 Uninflammable Clothes. — 
ress. ‘Thus the vessel acquires agreat and equal degree 
of solidity throughouty ~while the intermixture of coke 
with the clay, by giving a certain porosity of texture, ren= 
ders it much less liable to crack on transition from heat 
to cold, than those melting pots composed entirely of 
earthy ingredients.’’— Jbid. 
31. Copper of Great Britain and Ireland.—The quantity 
of pure Copper produced in all the mines of Great Britain 
and Ireland, during the year ending 30th June 1822, 
amounted to 10844 tons. : 
Edinb. Phil. Jour. Vol. VII. 
32. Combination of Alcohol with Oil of Turpentine.— 
M. Vauquelinhas found that if 100 parts, in volume, of vol- 
atile oil of turpentine, and 26 parts of Alcohol, are mixed 
together, they are not separable by rest, but form a homo- 
genous body—an effect which rises from a solution of the 
alcohol in the oil. This compound does not become tur- 
bid by water. : 
Ann. de Chimie Vol. XIX. p. 279. 
33. Action of Cork on Chalybeate Waters.—Mr. Wurza, on 
examining some bottles of chalybeate waters, was surpri- 
zed to find no iron in them; and on seeking the cause of 
this circumstance he discovered it in the astringent nature 
of the corks, which had combined with the metallic sub- 
stance. Headvised, when chalybeate waters are kept in 
bottles, that the corks should be first well steeped in the 
waters, in order that the astringent matter they contain 
may be saturated with the iron. 
Lond. Med. and Phys. Jour. 
24. Uninflammable Clothes.—M. Gay Lussac announced 
in the sitting of the Academy of Sciences, 6th Nov. 1820, 
that Linen dipped in a solution of phosphate of ammonia 
became incombustible. , . 
M. M. Merat-Guillot, father and son, apothecaries at 
Auxerres, have since shown that the acidulous phosphate of 
lime posseses the same property. In fact, linen, muslin, 
wood, paper, 8traw, impregnated with a solution of this 
salt at 30° or 35° of concentration, (126 to 130,) and 
