Chemistry and Physics. ‘ 425 
the more remarkably in the magnificent laboratory of the Ecole Nor- 
male, where M. Deville carries on bis labors. This chemist has also 
succeeded in volatilizing silica, which had already been previously 
done by M. Gaudin, with a gas blowpipe of his invention, fed by 
oxygen. 
It is essential for success that the combustible should be of the 
Proper kind, and finely divided. The best is made of the residue of 
the combustion of coal, mixed with cinders such as escape from the 
grate of a furnace, and are called ‘ escarbilles.” Coke and charcoal 
have produced nothing satisfactory. 
M. Deville informs me that he has found no difference between 
i ‘ » however, that he has not 
compared the electro-chemical properties of these metals, nor the ac- 
tion on light. 
branch of industry which bas been created by M. Remy, an humble 
sherman among the mountains of the Vosges. Deferring to another 
time further remarks, I will here state that I have recently seen in the 
&partment of M. Millet, an arrangement for the breeding of salmon and 
tout; and in the space of two months, the apparatus of M. Millet, 
Placed upon the marble of a fireplace, has brought out 19,000 young 
Salmons, and more than 10,000 young trout. ; 
» Prize.—The Aerostatic and Meteorological Society of Paris offers a 
Prize for the best material for enclosing hydrogen. The prize isa 
medal of gold, of the value of 300 francs. 
. ie Ke aie blication of Despretz’s memoir on 
the omntee of -Tangeniacesenine in to undertake a series of 
some 
'S only nec 
P 
Plane. It was found as the direct result of these experiments, that 
* This Journal, xv, 266, March, 1853. 
Szoonp Senis, Vol. XV, No. 45.—May, 1853. : 
