124 
The Fauna of the Deep Sea. By SipNEy J. Hickson, M.A. 
New York, D. Appleton & Co. Modern Science 
Series. 
Tus volume of the Modern Science Series is one of 
the attempts at popularizing a subject which is of excep- 
tional interest to scientific readers. The publication of 
the various deep sea exploring expeditions are too detailed 
and too technical for the comprehension of the ordinary 
reader. In this little book of 170 pages Mr. Hickson has 
attempted to collect all of the essential and interesting 
results of the study of the fauna of the bottom of the 
ocean. He gives us a short history of the investigations 
and describes the conditions of life at the bottom of the 
sea. The laws of distribution of fauna in different zones 
of the depths are explained, and then follows an outline 
of the discoveries in regard to each group of animals.as 
they exist at the bottom of our deep seas. As a popular 
account ofan interesting scientific subject this little 
volume is successful, and will enable a general reader to 
answer the most commonly asked questions as to the 
conditions of life at the bottom of thesea. Itis illustrated 
with twenty-three figures. 
Physiological Practicums. By Prof. B. G. Wiper. Press 
of the /thaca Journal. 
UNpeER this title Professor Wilder has published as a 
series of separate slips the directions for labratory work 
which he furnishes his students in Cornell as guides in 
the study of mammalian anatomy. Accompanying the 
laboratory directions are a series of twenty-nine figures 
on separate slips of paper. From these notes one can 
gain an adequate knowledge of the method of laboratory 
work pursued in Cornell, and an instructor who has 
similar work to do will find the notes of practical value. 
SKCIUBIN Cs: 
Vol. XXIII. No. 578 
Exactly why Professor Wilder calls them physiological 
practicums does not appear, for there is no physiology 
involved in the work. ‘The practicums cover nothing 
but general anatomy of certain of the organs of mammals, 
and any teacher who obtains them with the hope of getting 
assistance in practical physiology will be disappointed. 
The practicums, of course, bristle with Professor Wilder's 
peculiar terminology, a matter not to be deplored perhaps 
except inthe case of the brain. It does seem to be 
superfluous to introduce here an entirely new set of terms 
which will be of no value to the student outside of the 
special text books published by Professor Wilder. 
Darwiniana Essays. By Prof. H. Hux ey. 
D. Appleton & Co. 
AsipE from Mr. Darwin himself there is certainly no 
writer who has contributed so much to the general exten- 
sion and acceptance of the evolutionary doctrine as Pro- 
fessor Huxley. From the first appearance of the origin 
of the species Professor Huxley has been its champion, 
and from time to time his clear brain and lucid pen have 
given to the public essays upon one and another phase of 
the general studies inaugurated by Darwin. These essays 
have appeared at intervals from 1859 until 1888, the last 
one constituting an obituary on Mr. Darwin. The essays 
scattered in various publications have been finally collected 
in one little volume, and to them have been added a 
series of six lectures upon the general subject of the 
causes and phenomena of organic matter delivered to 
working men in 1863. ‘Taken together the essays com- 
prise Mr. Huxley’s valuable contributions to the general 
subject of evolution, and one can clearly discern in reading 
them one after the other the strong influence their author 
has had upon this growing conception of science. ‘There 
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