February, ’24] 
REVIEWS 
163 
Reviews 
The Principles of Insect Control by Robert A. Wardle and Philip 
Buckle, pages i-xvi, 1-295, 32 text figures. Manchester: At the 
University Press, London, New York, etc., Longmans, Green and Co., 
1923. 
This volume gives a very readable account of the various phases of insect control, 
devoting a chapter to each of the following topics: Host Resistance, Climatic Re- 
striants, Disease, Parasites and Predators, Bird Encouragement, Insecticides (3 
chapters), Dips and Dressings, Attractants and Repellents, Fumigants, Cultural 
Methods, Restriction of Spread, Crop Storage, Baits and Traps, Legislation and 
Machinery. 
This is a valuable and comprehensive resume, world wide in scope, of recent litera¬ 
ture, since it summarized within the confines of a small volume the essentials of a host 
of contributions. There is a separate and well selected bibliography for each of the 
chapters, consequently it is a very handy reference work in all fields of economic 
entomology. It should be in the hands of entomologists, in entomological libraries 
and in many of the general libraries of the country. E. P. F. 
External Insect Anatomy, A Guide to Study of Insect Anatomy and an 
Introduction to Systematic Entomology by Alex. D. MacGillivray. 
Pages i-x, 1-388, 142 text illustrations. Urbana, Illinois, Scarab 
Company, 1923. 
The volume is a comprehensive guide to the external anatomy of adult insects 
and although we may not agree with the author in all matters relating to terminology, 
it is a fact that no student can take the course outlined in this guide without gaining 
a very good idea of insect structure, something essential in both economic and 
systematic entomology. 
The general reader may be “delighted” with such terms as: alacoxasuture, anta- 
cava, antarolium, cephacoria, cervasternum, dexaparamere, distavalvaria, latero- 
clypeus, linguacuta, maxillaria, mesowing, octavalvae and many others, some at 
least unknown to makers of technical dictionaries. We doubt it. Nearly a page, for 
example, of this precise, presumably concise, language is devoted to a description of 
the mesonotum of Blatta orientalis and about as much more to the metanotum. 
The carrying of terminology to such an extreme raises a serious question in the 
reviewer’s mind. Are we entering a period when it will be necessary for a student to 
master an extended terminology in each of the numerous branches of science? Pre¬ 
sumably some of the new terms will be accepted as necessary. Others may be dis¬ 
carded, since it is possible that the difficulties of mastering such technical matter 
may offset any gain in conciseness and clarity, both desirable, though they should 
not be purchased at too great a cost. 
The selection of types for study is excellent, most of them being relatively common 
forms and therefore easy to obtain. The volume represents a vast amount of careful, 
exacting work. It contains much of value to the student of morphology, though it is 
regrettable that the internal anatomy and the structure of the immature stages have 
not been worked out in a similar comprehensive manner. The volume is an extended 
authentic, contribution on the external anatomy of insects. Those giving courses 
in this subject should have this stimulating work at hand. It covers a field not 
hitherto adequately discussed. E. P. F. 
