BOOK REVIEWS. 
95 
BOOK REVIEWS. 
" Insects and Human Welfare." By C. T. Brues. 8vo. xii 104 pp . 
(Humphrey Milford, London.) 10s. 6d. net. 
This volume gives a short review of the principles and practice of economic 
entomology. 
Of the five chapters, four are devoted to insects and their particular relation- 
ships to man, such as Insects and Public Health, Food Supply, Forest and 
Household. 
There are forty-two illustrations, including several maps, showing the introduc- 
tion, subsequent spread, and present distribution of many well-known pests in 
the United States, together with over thirty photographs of insects. 
On p. 61 is given a useful diagram showing the various combinations in which 
arsenical compounds may be used with Contact Insecticides and Fungicides. 
Although lead arsenate and soap is advised as a combination, it should be tested 
on a small scale before being used to any large extent in this country, on account 
of the danger of adding soap to acid lead arsenates, which will burn foliage. 
Although this book is intended for American readers, it can be profitably read 
in this country. It is clear and concise, and shows the effect of insects on 
human life, and the enormous damage done, directly and indirectly, to man's 
health and comfort, his food, both animal and vegetable, his clothing, and the 
general necessaries of life, such as timber &c. 
" Insect Pests of Farm, Garden, and Orchard." By E. Dwight Sanderson 
and L. M. Peairs. 8vo., v + 691 pp. (Chapman & Hall, London, 1921.) 
26s. net. 
This book has been revised and several chapters added in this second edition, 
the first having been published in 1915 (R.H.S. Journal, xlii. pt. 2-3, p. 452). 
It is profusely and clearly illustrated with 604 illustrations. 
The necessity for such a book in the States is readily recognized when the 
grand total annual loss by Insects to crops and stock is estimated at over 
^500,000,000. The chapters are divided up into the pests of Cabbage, Fruits, 
Stored Grain, Household, Domestic Animals, &c, together with the very necessary 
chapters on Insect Structure, Beneficial Insects, Insecticides, and Spraying 
Machinery. 
The mistake common to most American writers appears, i.e. to call the 
Bean and Pea Beetles {Bruchus spp.), ' Weevils,' whereas the true Weevil is 
Sitones, the genus Bruchus not being a weevil in any sense of the word. 
Although this book is intended for American readers, it contains many of 
our British pests, often under synonyms. 
- A few of our common pests, as the Apple Sawfly, Apple Psylla, Pear Midge, 
and Black Currant Mite are omitted, presumably on account of their absence 
in the States. The life history of the Woolly Aphis does not mention its migration 
from the Elm to the Apple, although this important knowledge of reinfection 
was first worked out in America. 
Most of the important Pests of Farm, Garden, and Orchard are described 
and figured, and remedies given for the great majority, and it should prove a 
useful reference book. 
"Manual of Tropical and Sub-Tropical Fruits." By Wilson Popenoe. Pp. 
xv + 474, with 24 plates and text illus. (New York : The Macmillan Co., 1920.) 
Price 305. net. 
From this manual are excluded the banana, the coconut, the pineapple, 
citrus fruits, the olive and the fig, the reason for these omissions being that 
these important fruits have been fully treated by other writers. A few of the 
subjects dealt with, such as the date, the avocado pear, the mango, the kaki 
or Japanese persimmon, and the pomegranate, are more or less regular articles 
of commerce and are fairly well known on the London market, whilst others 
such as the loquat, the guava, and the litchi are sometimes met with as preserves ; 
but the majority are seldom seen in shops and are scarcely known outside botanic 
