CHEMICAL ANALYSIS. 227 
moisten the surface of the pills. Some powdered sugar is 
then sprinkled over them, and by moving the pan they are 
thus covered with a coating of sugar. They are subse- 
quently placed on a seive and exposed in a warm room 
until they become dry. If a thicker coating be required, 
the process is repeated." A. S. 
ART. XL VIII. — CHEMICAL ANALYSIS, QUALITATIVE AND 
QUANTITATIVE. By Henry M. Noad, Lecturer on Chemistry at 
St. George's Hospital, &c. &c, with numerous additions, by Campbell 
Morfit, Practical and Analytical Chemist, &c, with illustrations. 
Philadelphia, Lindsay & Blakiston, 1849. pp. 572. 
The importance of analytical chemistry as a handmaid to 
the arts, is a sufficient reason why we should hail with plea- 
sure the publication of works devoted to that branch of science. 
We have every reason to feel gratified with the progress of 
manufacturing chemistry in the United States, as exhibited in 
the increased number and improved quality of specimens of 
chemicals exhibited at our annual exhibitions ; and also with 
the attention that many apothecaries have given to such parts 
of chemical science as have a pharmaceutical bearing. We 
believe, that, if for no other reason than the ability it con- 
fers of detecting adulterations, apothecaries should give a 
portion of their time to acquiring a knowledge of analysis. 
The book before us is one of several that have been pub- 
lished on the subject, and treats it in a manner calculated to 
facilitate the labors of the student. Several important 
additions have been made by the American Editor calcula- 
ted to improve the work, and bring it down to the time of 
publication. We do not agree with him, however, in the 
propriety of omitting the short chapter on manipulation, 
notwithstanding its brevity, which appears in the original 
edition. 
