452 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
" The Manual of Manures." By H. Vendelmans. 8vo. xvi + 
164 pp. (" Country Life/' London, 1916.) 3s. 6d. net. 
It is a common difficulty, which might be overcome by getting the 
proofs read by one more familiar with the language, for a writer 
in a foreign language to use technical terms unfamiliar to the users 
of that language, and the present book is not free from this fault. 
We make this comment first because it is the only fault we have to 
find with this excellent exposition of the value and use of manures, 
both natural and " artificial." Growers of garden crops will need to 
pay more and more attention to the question of economical manuring 
as time passes, and that will mean either the study for themselves 
of the whole question or the calling in of expert advice. Recipes 
from books will not be likely to prove economical or entirely satis- 
factory unless their selection is guided and their application modified 
by knowledge of the requirements of the plants grown and the nature 
of manures. Towards the acquirement of the latter knowledge this 
book will be an excellent aid, and we confidently recommend it even to 
those who have no previous knowledge, and especially do we commend 
the remarks upon the purchase of mixed manures, the use and abuse 
of lime, and the storage of stable manure. 
" Soils and Manures." By E. J. Russell. 8vo. ix + 206 pp. 
(University Press, Cambridge, 1915.) 3s. 6d. net. 
Dr. Russell's books are marked by a lucidity of statement and a 
grasp of the essentials of practical requirements which make them of 
great value to the cultivator as well as to the student. Both student and 
cultivator may read this little book with the assurance that careful 
reading will be amply repaid, both in the interest the book will arouse 
and in the suggestions it contains as to practice to be followed in the 
cultivation of different crops to obtain maximum yields. The time 
is past for us, either in garden or farm, to be content with low yields 
of produce of any kind, and the mere following of plans pursued by 
our forbears will not improve our yields. It is by the discovery of the 
factor which is limiting output, and the elimination or reduction of that 
factor to smaller dimensions, that progress may be made, and the great 
merit of this book is that it shows where we may look for some of the 
factors that are concerned. 
" Insect Pests of Farm, Garden, and Orchard." By E. Dwight 
Sanderson. 8vo. xii + 684 pp. (Chapman & Hall, London, 1915.) 
12s. 6d. net. 
It is computed that the annual loss of farm and fruit crops in the 
United States directly due to insects amounts to £250,000,000. In 
our own country the loss is doubtless proportionately less, but even 
so the cost of maintaining the vast army of injurious insects is 
enormous, and while many make spasmodic efforts to control them 
