Chemical Works. ¢ 39 
investigator, we may expect repeated editions of a work which, from 
its deserved popularity in Britain and in this country, must continue to 
be in regular demand and cannot be supplanted by any cotemporar 
performance. It interferes not with the works of the other British. 
chemists: those of Dr. Thomson, Dr. Henry, Dr. Ure, Dr. Murray 
and Prof. Brande, being sufficiently different in design not to come 
in Competition with Dr. Turner,* or, materially, with each other. 
3. Prof. J. W. Wesster’s Manvat, on the basis of Brande — 
For a notice of this work, we refer to Vol. XI, p. 377, of this Jour- 
nal.” Since that, it has passed through a second edition, and its adop- 
tion in several American colleges and other seminaries, evinces that 
its merits, as a judicious and faithful compendium of the science, are 
justly appreciated. 
4. Prof. Green’s Evements, on the basis of Turner.—Upon this 
basis, Professor Green has ingrafted various additions and improve- 
ments, resulting especially from his personal observations abroad, and 
more particularly while in Paris, under the auspices of some of the 
Most eminent men of that city. 
5. Dr. Henry’s Exements, 11th edition.—It was our intention 
!0 notice this latest and much improved edition, more than a year 
since, when a copy was received from the respected author; but 
fares and labors have intervened, and prevented the fulfilment of 
many purposes, as well as of this. The following notice from Dr. 
Brewster's Journal for July 1830, (Edinburgh,) is so much in unison 
with our own views, and we were so much gratified by the extract 
which it contains, that we with pleasure insert it entire. 
“From this new edition of Dr. Henry’s system of chemistry, we 
€xtract the following recommendation, which is addressed to the no- 
ae of learned Societies. ‘The great laws of combination in defi- 
nite and in multiple proportions, on which the Atomic Tuxory 
mainly rests, have, more especially, derived increased support from 
the accumulated mass of evidence. In too many instances, it must 
be acknowledged, we have not, even yet, attained all the precision 
ats desirable, as to the true proportions in which bodies combine. 
oF can we arrive at this degree of certainty, until the relative weights 
* . 
‘ Mr. pnee’s editions are in a neat and convenient form, and perhaps the great 
a t the work in this country, will enable the respectable publisher to give 
ture editions in a style more aitractive to the eye: 
12 
Vi oL. XX.—No. 1. 
