Reviews and Book Notices. 
167 
is a surprisingly readable book incorporating a large amount of informa- 
tion. Although primarily written for work on animal tissues, its perusal 
is equally profitable to the botanist or zoologist, and it may be strongly 
recommended to those engaged in preparing histological specimens. 
Index to the Genera and Species of the Dratomaceae, Part I, 
by F. W. Mills, Price 10/- per part. (Wheldon & Wesley, Ltd., 
2-4 Arthur Street, London, W.C.2.) Mr. Mills’ work on the diatoms is 
well known and he has at last been prevailed upon to publish an index 
to the species and genera. This will be invaluable to all serious students 
of this group. It gives references to all the taxonomic literature and 
descriptions of tire various forms. The amount of work involved may be 
realised from the fact it comprises over 500 genera and 60,000 species 
and varieties. It is to appear in parts. The present part deals with 
the literature cited and with diatoms whose generic name begins 
with A. 
The History of the Entomological Society of London, by S. A. 
Neave, assisted by F. J. Griffin. The Entomological Society, pp. 
224, 10/6 net. The occasion of the centenary of the Entomological 
Society of London has been chiefly responsible for the production of this 
history by the Honorary Secretary, Dr. S. A. Neave, and the Registrar, 
Mr. F. J. Griffin. The rise and development of the society up to 1933 
is traced, and the debt the society owed to Kirby, Westwood, Spence 
and others is clearly indicated. Other chapters deal with the collections, 
the library, publications, and finances. Not the least interesting part 
of the book is that devoted to brief biographies of distinguished fellows. 
The society has played so great a part in British entomology that this 
record of its history is both timely and valuable, and the society may be 
congratulated on its production. 
The Meaning of Animal Colour and Adornment, by Major 
R. W. G. Hingston. Edward Arnold & Co., pp. 411, 18/- net. The 
ideas underlying this book might almost be termed a psychological 
theory of evolution. It is an attempt to evaluate the factors leading to 
differences in the colours and markings of animals. Major Hingston 
brings to his work a wealth of information which only a naturalist of 
his experience could acquire, and then presents it in clear and orderly 
fashion. He passes in review the colourations and markings of mammals, 
birds and insects, their songs and dances, and then concludes that the 
main differences between varieties and sub-species are associated with 
the different channels through which the animals give vent to hostile 
expressions. He points further to the frequent resemblance between 
hostile attitudes and expressions and those of courtship. As a result 
of this outlook the author develops the conclusion that conditions 
permitting the removal of fear allow of the development of methods of 
hostile expression and are correlated with the development of new 
varieties or races, marked by intensification of the markings or forms 
exhibited during the expression of anger. Many of the examples quoted 
in illustration of this argument find a much better explanation in these 
terms, than, for example, in terms of the theory of protective colouration. 
While it is impossible to summarise the wealth of illustration given, 
the author finds good support for his thesis in the Eastern birds he has 
studied. Another particular example he employs is the case of the 
development of the various breeds of pigeon from the rock pigeon. Thus 
the trumpeter has developed hostile expression through the vocal channel, 
the fantail in its feathers, and the pouter in its breast expansion. The 
author may be congratulated on having produced an eminently readable 
book in developing his argument, and one which is certain to arouse 
considerable interest among naturalists. 
1933 JuB 1 
