Chemical Works. 93 
7. Dr. THomson on Hear anv Licut.—This is the first part of a 
series of volumes, (a substitute for his learned and elaborate system,) 
which this able author designs to publish for the use of the students. 
of the University of Glasgow, of which he is Regius Professor of 
chemistry. As he has allowed himself a full octavo volume for these 
subjects, he has expatiated with correspondent fullness, and the work 
is a very valuable digest of the most important facts and opinions on 
topics which are inexhaustible. His researches have enabled him to 
introduce much new important matter, some of it from sources not 
usually explored, and he has enriched this volume with many valua~ 
ble tables. 
- By some perhaps, the style will be regarded as occasionally less 
condensed than is usual in elementary treatises of science, but no 
thorough student of these subjects will wish the account of them to 
be shorter.. We shall look with impatience for the succeeding vol~ 
umes of this great work. 
8. Arxiys’ Dictionary.—It is a matter of great surprise and re- 
gret, that only one edition, (and that more than twenty years ago,) 
has been published of a work of incomparable excellence, and which 
is still an invaluable book of reference. From long and intimate fa- 
miliarity with this Dictionary, or rather Encyclopedia of chemistry, 
we have no hesitation in saying that it is surpassed by nothing with 
which we are acquainted in the English or French language, and a 
Steater service could not be performed to chemistry and the connected 
subjects, than by giving a new edition in the spirit and manner of the 
first, with all the discoveries and improvements to the present time. 
9. Ure’s Dicrionary.—A fourth edition of this work, with the 
author’s revision, has just reached this country. We have not had 
time to examine it, but cannot doubt that an author of so much acu- 
men, zeal and industry, has given this work all requisite additions 
and improvements. Originally, this dictionary was published by the 
late Mr, William Nicholson of London, and it was exceedingly 
Valuable, especially as it appeared before Aikins’ Dictionary. It has 
“en modernized, and in a great measure rewritten, by Dr. Ure, and. 
the American public have been made acquainted with it through the 
proved edition of Dr. Hare. It is a very useful work, and we trust 
that the fourth edition will be found free from some personalities, 
Which we regret to have seen in former English editions. 
Among the books of this class, we may mention the small diction-— 
=y translated from the French, by Mrs. Lincoln. ‘To those who 
ad it inconvenient to consult the larger dictionaries, that now men- 
