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COLOURED FLAMES. 
The colours of the flame produced by burning cotton dipt ip 
some of the neutral salts in spirit of wine. 
Neutral Salts. Colours of their fiam.es. 
Muriates of Soda 
Bright yellow. 
Ammonia 
Brownish yellow. 
Lime 
Red yellow (Deep.) 
Magnesia 
Red yeilow. 
Barytes - - 
Pale yellow. 
Strontian 
Deep red. 
Allum 
Reddish. 
Iron 
Sparkling yellow. 
Manganese 
Sparkling red-yellow. 
Tin 
Pale bluish. 
Copper 
Green with yellow. 
Iron and Strontian 
Sparkling reddish. 
Acetites of Iron 
Reddish yellow. 
Lead 
Bright red yellow. 
Alumine 
Beautiful purple yellow. 
Nitrates of Potash 
Beautiful purple. 
Soda 
Beautiful reddish yellow. 
Lime - 
Beautiful reddish yellow. 
Lead - 
Red yellow. 
Bismuth 
Red yellow. 
Silver 
Reddish yellow. 
Sulphats of Iron 
Reddish yellow. 
Copper 
Green. 
Zinc 
Reddish yeilow. 
Magnesia 
Reddish yellow. 
Nitro-Muriat of Piatina 
Yellow. 
Chromat of Potash 
Purplish red. 
Prussiat of Potash 
Reddish yellow. 
JOHN TYLER LINTON, 
Dickinson College f 
Mr. Hord, of Virginia, one of my chemical students at Dickin- 
son College, has lately taken out a patent for facilitating the crys- 
tallization of salt, by the application of a vacuum. About one- 
third of the fuel is saved, as is said. C. 
