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POPULAR SCIENCE REVIEW. 
resemblances enlarged and somewhat modified. He corrects bis remarks on 
serial homologies, &c. &c. In fact, as we have said, the author has re- 
written the volume, and in doing so he has not neglected to take up all the 
various arguments that have been urged against him. He shows, too, that 
his supporters are vastly greater than they were, and that they gradually 
increase. His book has an American edition, and has been translated into 
German, French, Italian, Russian (three editions), Dutch, and Swedish. 
He may well be proud of the fact, but he cannot feel as great a pride as 
his English followers feel in him; for they admire his calm philosophy, 
and they rejoice in the fact that the author of the most philosophic book of 
the century is an Englishman. 
SUPPLEMENT TO WATTS’ DICTIONARY.* 
A BOOK which is merely a supplement to a regular dictionary, and 
which contains no less than 1136 pages of very small type, is, it must 
be confessed, rather a tough piece of work for the reviewer. Of course 
we give the most sketchy notice of such a work, but we cannot help won- 
dering at the vast labour of the editor and his colleagues. The present 
volume brings the record down to 1869, but it includes also several addi- 
tions to and corrections of former results which have appeared in 1870 
and 1871. Thus this volume completes perhaps the most valuable ency- 
clopaedic publication which the literature of any country possesses. Besides 
the editor’s writing, there are various contributions on Electricity. — Heat, 
by Mr. G. C. Foster, B.A., F.R.S. ; on Proteids, by Dr. Michael Foster ; on 
Beer and the Metallurgy of Iron, by Dr. B. H. Paul j on Light and Spectral 
Analysis, by H. E. Roscoe, Ph.D., F.R.S. ; and on Acetic Ether (in part), 
the Butyl Alcohols, Butyric Acid (in part), Ethyl and the Ketones, by 
Mr. J. A. Wanklyn. Among a great number of articles, those which strike 
us as most worthy of notice are those on Atomicity and Chemical Action ; 
but all are well done and all are of importance. Especially so is a paper on 
the Aromatic series, in which some of Kekule’s remarkable views are in- 
troduced ; and that on Electricity, in which are given some good illustrations 
of Thomson’s galvanometer. All through the book is of admirable quality, 
and we congratulate the editor on its issue to the public. 
OUR NATIVE SINGING-BIRDS.f 
T HOUGH it must be confessed that our literature on this particular sub- 
ject is far from being barren, still there is room for such a work as the 
title of the book before us involves. We mean that, for a work dealing 
* A Dictionary of Chemistry and the Allied Branches of other Sciences.’* 
By Henry Watts, B.A., F.R.S., F.C.S. ; assisted by eminent contributors. 
Supplement : Longmans, 1872. 
t u British Song-Birds ; ” a Practical Treatise on their Habits, Nidification 
and Incubation ; the Mode of Rearing Young Birds, and their Treatment 
in Sickness and in Health. By Joseph Nash. London : W. Tegg, 1872. 
