REVIEW. 
ART. LXXXIV. — THE ENCYCLOPEDIA OF CHEMISTRY, Practi- 
cal and Theoretical: embracing its application to the Arts, Metal- 
lurgy, Mineralogy, Geology, Medicine, and Pharmacy. By James 
C. Booth, A. M., M. A. P. S., Melter and Refiner in the U. S. 
Mint, Professor of Applied Chemistry in the Franklin Institute. 
Assisted by Campbell Morfit, Author of " Applied Chemistry," 
and " Chemical Manipulations." Second Edition. 1 vol., royal 
8vo. pp. 974. Philadelphia : Henry C. Baird, successor to E. L. 
Carey. 1850. 
So many treatises on Chemistry and its branches have 
been presented to the public within the last few years, and so 
varied have been their pretensions and their merits, that the 
student of this interesting science would find it a puzzling 
task to form any accurate idea as to which of the competi- 
tors for his notice would most profitably repay perusal, or 
would best elucidate the particular subjects of his investiga- 
tion. In the " Encyclopedia" just published by Mr. Baird, 
we have a new aspirant for popular favor, or rather an im- 
proved and enlarged presentation of a work which has already 
met with a favorable reception from the public ; and though 
but a hasty and superficial glance at its deserts is designed 
at present, it is hoped that even such an imperfect sketch 
may serve in some slight degree to assist or guide the judg- 
ment of the inquirer. 
In its general plan, it is obviously modeled on the Diction- 
ary of Chemistry of Dr. Ure, though, as the author has cor- 
rectly remarked in his preface, " the science has so entirely 
changed its features, as to render that work of no avail ; 
nothing has in consequence been taken from it." Indeed, 
throughout the volume there is exhibited the result of dili- 
gent and laborious comparison, and occasionally the traces 
of original research; and though such a production must of 
course necessarily be chiefly a compilation, it is evident that 
Mr. Booth and his coadjutors, Dr. Boye and Mr. Morfit, 
