92 Notices of Books. (January, 
lutely necessary. This has been ably accomplished so far as can 
be judged by the small portion at present issued. The introduc- 
tion, treating on the construction of the microscope, its accessory 
apparatus, and the methods of investigation employed, ha's been 
corrected as closely as possible to the date of publication. The 
assistance of Messrs. Berkeley and Rupert Jones augurs well for 
the treatment of such very interesting microscopical subjects as 
Cryptogamic Botany, the Foraminifere, and Micro-Geology. 
The text has been added to wherever needed, and the biblio- 
graphical notes extended; further additions, however, might 
have been made in this department with advantage, as one of 
the student’s greatest difficulties is to find references to books. 
The plates have been corrected; some, however, which have 
been re-engraved after those in the former editions by Tuffen 
West have lost, as might be expected, somewhat of their 
original delicacy; and the microscopist who is familiar with the 
style of this accomplished artist will miss the work of an 
old friend whose place can be to him but ill supplied. 
The book, saving in this respect, is in no way inferior to the 
preceding issues, and still forms a most valuable addition to the 
library of the working microscopist. Considering the great 
increase in the number of those who now make use of the 
microscope, principally owing to the formation of societies 
in and around London and in the country, it seems a question 
whether the work might not have been profitably issued at a 
somewhat lower price than formerly; for, although the cost 
is spread over a large period by the issue in parts, yet the work 
is still an expensive one, and beyond the means of many earnest 
students who might be induced to purchase it if obtainable 
by the expenditure of a smaller sum. 
A Systematic Handbook of Volumetric Analysis ; or, The Quantt- 
tative Estimation of Chemical Substances by Measure, applied 
to Liquids, Solids, and Gases. By Francis Sutton, F.C.S., 
Norwich. Second Edition. London: Churchill. 1871. 
Every chemist will welcome the second edition of Mr. Sutton’s 
handbook. So much has been done in chemical science since 
the first edition was published seven years ago, that the revision 
of even a standard work has been necessary. Volumetric 
analysis presents nothing very new, but there are many modifi- 
cations and improvements in the processes. This system of 
analysis requires, perhaps, a more extended experimental know- 
ledge of the reaction of bodies upon each other than is required 
in gravimetric analysis; but given this knowledge, there is an 
immense saving of time and labour. Dr. Frankland and Mr. 
W. Thorpe, F.C.S., have contributed largely on the analysis of 
water to this second edition; and Mr. Herbert M‘Leod, F.C.S., 
Professor of Chemistry and Experimental Science at the Indian 
