59 
ON UNGUENTUM SABlNiE. 
Methodical School, in the following century, again form 
the superstructure of the natural sciences, physical and 
medical. 
ART. XIV. ON THE PREPARATION OF UNGUENTUM 
SABINE. By. J. Toller. 
Permit me, through the medium of your Journal, to con- 
vey to Pharmaceutists a caution against preparingthe cera- 
tum sabinse in copper vessels, a practice I am authorized in 
believing to be very general, from the uniformity of the 
peculiar green color which the cerate constantly presents, 
as well as from having ascertained that this is due to a salt 
of copper, formed during the preparation of the cerate. Its 
presence is readily evidenced by any of the usual tests of 
this metal. 
When the cerate is prepared in a porcelain vessel, by 
means of the water-bath, it is of a yellowish green, and has 
not so much of the odor of the plant, but it is equally power- 
ful and efficient ; it keeps much longer, without change of 
color, or becoming rancid. 
Lond. Pharm. Journ. and Trans. 
