256 
EDITORIAL. 
reduced to powder, moderately fine, then add the syrup with two 
ounces of the water; put the mixture in a strong pint bottle, cork, and 
tie it over, and place it in a vessel 'of water, which is then heated to 
the boiling point and kept there for half an hour. The cork is then 
removed, and the liquid strained. The residue of the vanilla is then 
replaced in the bottle with the remainder of the water mixed with the 
alcohol, the cork put in, and the bottle again heated in hot water for 
half an hour, when the contents are strained and mixed with the first 
liquid. 
The liquid thus obtained keeps very well, and is strongly impreg- 
nated with the odorous and sapid principles of vanilla, for which a 
saccharine solution is a good solvent. 
We have received from Messrs. Lea & Blanchard the first volume 
of Dr. F. Knapp's " Chemical Technology: or chemistry applied 
TO THE ARTS AND TO MANUFACTURES," of which Prof. Walter R. Johnson 
of this city is American editor. We will notice the work in our next 
number. 
ERRATUM. 
In the article at page 184, on the Decomposing power of hot 
steam," the patentee's name should read Tilghman,"" instead of 
Tighlman.^^ 
