PURIFYING COMMON MANNA. 
45 
The result of Dr. Thompson's analysis was 
1.997 at. tartaric acid, 
1.92 protoxide of antimony, 
1. potassa, 
2.139 water. 
The mean of the two analyses: 
Oxide of antimony, 2.12 
Potassa, 1.00 
Tartaric acid, 1.96 
Water, 2.07. 
Leaving no doubt of the true composition of the salt, being 
2 at. oxide of antimony, 19.00 
1 potassa, 6.00 
2 tartaric acid, 16.50 
2 water, 2.25 
43.75. 
Edin. Med. and Surg. Journal. 
ART. IX,— EXTRACT FROM A REPORT MADE TO THE 
ROYAL ACADEMY OF MEDICINE, JULY 1836, UPON A 
METHOD OF PURIFYING COMMON MANNA, AND CON- 
VERTING IT INTO FLAKE MANNA. By M. Dausse. 
The Academy, at its sitting, in April last, received a letter 
from M. Dausse sen., a Pharmaceutist of Paris, in which he 
announces a new mode of purifying manna in sorts by means 
of animal charcoal. This letter was accompanied by a speci- 
men of flake manna obtained by the method indicated, for 
which the author solicits the approval of the academy. 
The committee have thought the subject should be consid- 
ered under three points of view. 
