62 
POPULAR SCIENCE REVIEW. 
animal chemistry, and that it will prove a valuable addition to the literature 
of this branch of science. It is true that we cannot agree with all the 
conclusions arrived at in this work, and in instances we entirely disagree 
with the author’s criticisms on the researches of other workers in the same 
field, but this is no more than might be expected in the case of an author 
with the decided and original views of Mr. Kingzett. The author states his 
ideas with clearness and force, and they are such as will well repay careful 
examination and consideration. In several instances he has succeeded in 
throwing much light on what previously were very doubtful questions, 
and thus earns the gratitude of those working on the subject. In several 
respects, indeed, we could have wished that the work had been rendered 
more complete. In more than one instance we have been disappointed in 
finding that important subjects had been merely glanced at, or were passed 
over with a bare reference when the work might have very well embodied 
some of the information now scattered about in isolated researches. In this 
respect the present work is not likely to take the place of a standard manual, 
which ought to contain a careful synopsis of all that is known on the sub- 
ject. To a certain extent Mr. Kingzett’s work possesses more of the character 
of an elaborate essay than of a treatise, both in its style and in its objects. 
At times more attention is devoted to criticisms, the opinions of different 
investigators, than to summarising the facts resulting from their investiga- 
tions ; although to us it would seem that these last were essential to the 
completeness of the volume. 
The work presupposes a certain amount of chemical knowledge on the 
part of the reader, although no more than might reasonably be expected. 
Any additional information which may be required for special sections will be 
found supplied in the work. Mr. Kingzett rather discountenances the re- 
cent developments of theoretical organic chemistry. He has not introduced 
them, therefore, into the present work, which thereby gains in simplicity, if 
it loses somewhat in power. It is a work which we have no hesitation in 
recommending to all those who may require a knowledge of the subject of 
animal chemistry. To medical men we feel sure it will prove of great^service ; 
and to young scientific chemists it will suggest a field for invaluable 
researches. 
PLEASANT WAYS IN SCIENCE.* 
M R. PROCTOR has here collected eighteen essays, taken chiefly from the 
“ Contemporary Review,” the “ Gentleman’s Magazine,” the “ Cornhill 
Magazine,” “ Belgravia,” and “Chambers’ Journal.” One is the substance 
of a lecture delivered at the Royal Institution, in May 1870. 
The subject of the first is the Sun ; of the second “ drifting ” light ; of the 
third “ star drift.” The rest seem miscellaneous, and contain Mallet’s " Theory 
of Volcanoes,” “ Towards the North Pole,” a narrative of the Arctic Expedi- 
tion of 1876, and an account of the tremendous wave which, in 1876, swept 
* 11 Pleasant Ways in Science.” By Richard A. Proctor. Sm. 8vo., London : 
Chatto & Windus, 1879. 
