262 
AMALGAMS FOR STOPPING- TEETH. 
times a rather difficult process involving considerable loss. 
It is moist, of a greyish buff color speedily becoming dark 
on the surface by exposure to the air; when strained it 
acquires a browner hue, and is very adhesive. It was 
formerly called Rhine pitch, to distinguish it from another 
imported variety now seldom seen, which was designated 
Baltic pitch. 
Baltic pitch is a brittle resin, externally transparent, and 
of a bright yellowish brown color, internally pale burl, and 
very opaque. Its odor is slight but agreeable, though 
wanting the peculiarity of that of genuine Burgundy pitch. 
I know not its botanical origin. 
Artificial Burgundy pitch, apparently intended as an 
imitation of the sort last described (since it strikingly diners 
from the Hamburgh or genuine sort) is manufactured in 
London and elsewhere, and is | sold in bladders, as a clear 
brittle resin, very moist, of a fine orange yellow color, and 
having but little odor and taste. It does not completely 
dissolve in cold alcohol. 
Other varieties of spurious Burgundy pitch are employed 
on the continent, but as they do not occur in English com- 
merce, it seems unnecessary to describe them. — Pharma- 
ceutical Journal, March, 1850. By the Editor. 
ART, LXIL— ON AMALGAMS FOR STOPPING TEETH. 
By Arnold Rogers, Esq. 
I have much pleasure in communicating, through the 
Pharmaceutical Society, a few remarks on amalgams, as 
well as the formula for the one I have used for some years ; 
and although occasionally some specimens have come 
under my observation, which seemed to possess qualities 
superior to the general character of amalgams, yet, on the 
