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REVIEWS AND BOOK NOTICES. 
Evolution and the War. By P. Chalmers Mitchell. London: Jf. 
Murray, 1915, pp. 114, 2s. 6d. net. This little book is based on three 
lectures delivered by Dr. Chalmers Mitchell at the Royal Institution last 
February, but it contains much information which possibly might not be 
considered quite suitable for lectures there. Dr. Mitchell deals with the 
subject from a point of view of ‘ War and the Struggle for Existence ’ ; 
‘ The Struggle for Existence amongst Animals’; ‘ Nationality and Race’ ; 
“The Production of Nationality: Selective Factors and Epigenetic 
Factors’; and incidently the book presents some difficult biological 
problems in a slight and topical form. 
Elementary Photo-Micrography. By W. Bagshaw, F.R.M.S., pp. 143, 
3rd edition, Iliffe, 1915, 2s. 6d. net. Since the first edition of this work 
appeared in 1902, considerable additions have been made both in the 
text and illustrations. The book has been doubled in size and is illustrated 
by 15 plates, of which two are in colours. Those familiar with Mr, Bag- 
shaw’s work with the microscope will find this book characteristic of the 
author, a clear and straightforward account of the simplest processes 
necessary for good results. He shows that expensive apparatus is not 
essential, and those microscopists more anxious about good results than 
the display of costly accessories, will find in this work a really useful 
guide. Beautiful illustrations are given of photographs taken by direct, 
transmitted and reflected light, also by dark-ground and oblique illumina- 
tion, as well as by flashlight and polarised light. 
Spencer Fullerton Baird: a Biography. By William H. Dall, A.M., 
D.Se. London: J. B. Lippincott, Company, 462 pp., 15s. net. This 
work gives the life of a great naturalist, the friend of Agassiz and Audubon, 
the head of the Smithsonian Institution, and the organizer of the Fish 
Commission. It includes much interesting correspondence with eminent 
men of science and military leaders. Natural history in America is most 
of all indebted to two remarkable men, Professor Louis Agassiz and Pro- 
fessor Spencer F. Baird. Their activities in a public sense in this country 
began about the same time, Agassiz, the enthusiastic inspiring teacher, 
and Baird, the efficient, hardworking and lovable organizer, complemented 
each other. Prof. Baird was a born naturalist and organizer of methods 
and men. His biography is not a history of explorations nor a record of 
technical investigations ; but an account of the life and relation to them 
of a singularly eminent, able, efficient and modest devotee of the natural 
sciences. Apart from the scientific side of the activities it endeavours to 
make the reader acquainted with the characteristics of a pure and. lovable 
leader of men to whose modesty and self-sacrifice America owes a debt which 
is still appreciated only by a select few. There are several illustrations. 
Field Archaeology as Illustrated by Hampshire. By J. P. Williams- 
Freeman, M.D. London: Macmillan & Co., Ltd., 1915, 462 pp., 15s. net. 
This volume admirably illustrates the antiquities of a single county and 
can also be taken as a key to the prehistoric earthworks of Britain. The 
author has unquestionably had unrivalled opportunity for studying the 
early antiquities of his county, and while in many respects Hampshire 
may possess advantages over many counties, others might have produced 
a similar volume. Hampshire is to be congratulated on leading the way. 
Descriptions of ancient roadways and earthworks occupy the bulk of the 
volume; numerous carefully drawn plans of the latter forming a specially 
valuable feature. The author’s dedication is somewhat unusual, namely : 
‘ To all those friends (or to those who still remain the same), whom I have 
pressed into the service of visiting these camps, who have clambered, up 
the heights and slid into the depths, who have struggled with the tape 
and. suffered under the rods, who have often assumed the gait and some- 
times the diet of the serpent, and above all, who have borne in silence 
(more or less), the inflictions of a man with a hobby, I dedicate this book 
in memory of (to me) many pleasant expeditions.’ 
Naturalist, 
