252 Notices of Books. (April, 
the limbo of forgottenness. Mr. Rodwell pursues his subject no 
further than to the dawn of modern pneumatic chemistry,—the 
epoch of Hales and Boerhaave, Lemery and Mayow. He has 
produced a thoughtful, suggestive, and decidedly readable book, 
which we hope will be duly appreciated. 
Elements of Chemistry, Theoretical and Practical. By W. A. 
Mitter, M.D., LL.D. Revised by HrerBert McLeop, 
F.C.S. Fifth edition, with additions. London: Longmans, 
Green, and Co. 
‘Loox for it in Miller” we have repeatedly heard said, when 
some rather recondite piece of chemical information had been 
vainly sought for in more voluminous works, or in files of 
scientific periodicals. And very often in “Miller” the fact 
required was found. Hence it is no wonder that the ‘‘ Elements”’ 
have gradually secured that place in the favour of students which, 
consule Planco, was held by Graham and Turner. That a new 
edition was required is, therefore, perfectly natural. 
The revision which the work has undergone does not consist 
merely in the insertion of the most important novelties dis- 
covered since the appearance of the fourth edition, but in 
a re-arrangement of the non-metallic elements which the editor 
conceives will ‘facilitate the progress of the student in the 
theoretical part of the science.” 
Many of the compounds of carbon have been removed to an 
appendix, as also the section on gas-analysis. An account has 
also been given of the most recent researches in thermo- 
chemistry,—a subject which is attracting the attention of some 
of the ablest chemists of the day, and which promises to play an 
important part in the progress of the science. 
° 
The Preparation and Mounting of Microscopic Objects. By 
Tuomas Davies. Second Edition. Edited by JoHN 
Matruews, M.D., F.R.M.S. London: Robert Hardwicke. 
1873. 
Tue former edition of this valuable little work has long been 
known to microscopists for the eminently practical manner in 
which its special subjects are treated, making it one of the most 
useful aids to the student commencing microscopical work. 
The new edition will by no means disappoint its readers, the 
added matter amounting to fifty-eight pages. It is much to be 
regretted that the state of the author’s health has prevented his 
personal superintendence of the work, but he has an able editor 
in Dr. Matthews, in whose hands he placed his copious store of 
