232 Miscellaneous fi ntelligence. 
presented our pyrotechnical readers with a recipe for the red 
fire which has lately gained so much celebrity in the theatri- 
cal representations of conflagrations, and which forms so beau- 
tiful a change in fireworks. We now give them the component 
parts of a more modern invention, which has long been a de- 
sideratum in this branch of art, namely, a green fire, and 
which, when burned in a reflector, sheds a beautiful green 
light upon all surrounding objects; it may also be employed in 
the changes of fireworks alternating with red and blue fire. 
Take of 
Flowers of sulphur M i 13 parts. 
Nitrate of baryta 77 
Oxymuriate of potassa . ; 5 
Metallic arsenic ‘ ' we se) 
Charcoal. ; . 3 
The nitrate of baryta should be well dried and powdered ; it 
should then be mixed with the other ingredients, all finely pul- 
verized, and the whole triturated until perfectly blended toge- 
ther. A little calamine may be occasionally added, in order 
to make the compound slower of combustion; and it is above 
all things requisite, that both in this and the red fire the tri- 
turation of the materials should be continued until they are 
completely mixed.—T. G. 
8: Composition of Tutenug, or Chinese White Copper.—This 
celebrated alloy has been analyzed by Dr. Fyfe, who gives the 
following as its composition :—( Edinburgh Philos. Journal. ) 
Gepper 2a Mes PCA 
Zine Sse Rw a Fea. 
Nickel’ #0). Car, 43k 
Tron eH se Biel Mie, vRPeRG 
100.0 
9 Effect of Voltaic Electricity upon Alcohol.—M. Lindersdorff 
produced an ethereal fluid by the action of the voltaic pile upon 
alcohol; and by continued electrization, a mixture of equal 
parts of alcohol and liquid ammonia lest its inflammability, and 
acquired a bitter flavour, yellow colour, and nauseous odour. 
On evaporation it left a greasy residue. 
These are very interesting results. 
10. Artificial production of Formic Acid, by M. Doebereiner.— 
When a mixture of tartaric acid, or of cream of tartar, black 
oxide of manganese and water is heated, a tumultuous action 
ensues, carbonic acid is evolved, and a liquid acid distils over, 
which has been, upon superficial examination, mistaken for 
5 
