MECCA OR BUSSORAH GALLS. 
265 
constantly agitated as possible. Upon this the smoothness 
of the coating greatly depends. 
If the liquid be kept in constant motion by syphoning 
from a supply vessel, and again into another receiving ves- 
sel, specimens of great beauty may be obtained. 
I find the best metallic surface is obtained by first dipping 
the bronzed flask for a single moment into a silver solution 
in connection with a small battery (cyanide of silver and 
potassium is best,) an almost imperceptible coating of silver 
is immediately deposited, upon which the copper takes 
beautifully, covering the whole surface instantaneously, 
instead of gradually creeping down from the connecting- 
wire as it does on the bronze alone. Thus a perfectly 
smooth and uniform coating is produced, which is soon 
covered of sufficient thickness. 
I have now covered a great many vessels, and with an 
uniform and certain result, without difficulty, and strongly 
recommend to every chemist this highly useful and economi- 
cal form of apparatus. — Pharmaceutical Journal. 
ART. LIX.— MECCA OR BUSSORAH GALLS. 
A specimen of galls, called Mecca galls, were presented 
to the Pharmaceutical Society by Mr. Luckombe, who 
informed Dr. Pereira that they were imported from Busso- 
rah. 
Dr. Pereira stated that these galls were identical with 
those described and figured in the 17th volume of the Tran- 
sactions of the Linnsean Society, 1847, by the late Mr. 
A. B. Lambert, whose specimens were brought home by 
the Hon. Robert Curzon, from the Holy Land. 
Mr. Curzon stated that the tree which produces them 
grows in abundance on the mountains in the neighborhood of 
the Dead Sea, and is about the size of our apple-tree. It is 
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