454 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY, 
A good many of the pests dealt with are illustrated, but it is a pity 
that in many instances there is no indication on the plates of the 
size of the creatures figured. Thus on the plate facing p. 73 the 
woolly aphis is figured several times larger than the larva of the rose 
chafer ; opposite p. 98 the figure of the turnip-flea beetle has an 
indication of the actual size of the pest, but no such indication is 
given on the figure of the asparagus beetle, and we are led to suppose 
from the figure that we have to deal with a beetle over an inch in 
length ; but we need not multiply instances. 
The author truly says that only a selection of the insects that 
prove pests in our fields and gardens and stores can be dealt with, 
but where this is the case it is perhaps a pity not to select the very 
worst instead of those which are less prevalent. Rarely do we see 
the codling moth now, though the author regards it as probably the 
most harmful of insect pests, but similar damage is done by the apple 
sawfly, which he does not mention, nor does he mention that all too 
common Psylla that is so prevalent in many an orchard in this 
country. Similarly, the numerous Tortrix moths that prey upon 
apple foliage, and are almost equally harmful with the winter, mottled 
umber, and March moths, are not mentioned. 
It is difficult to see how one of the suggested treatments for Pear 
Midge could be effective, for the heavy spraying with Paris green 
just before the blossoms open could not reach the larvae, which hatch 
inside the flowers (or buds) and feed inside the young fruits, nor 
would it be a " Spartan " remedy, for it would not be likely to damage 
the buds. The author has apparently not experienced the value 
of the Wisley turnip flea trap for catching the turnip flea, for he 
makes no mention of it, nor can we agree with the adequacy of his 
remedy for white fly in greenhouses, for which he recommends fumi- 
gation with tobacco, without the warning that persistent fumigation 
will be necessary. 
Much remains to be discovered with regard to almost all the 
insects he mentions, as he points out, and we may mention just one 
of the points which occur in his book, showing how necessary it 
is to investigate in each district or country, and not to depend upon 
observations made abroad. In detailing the life-history of the 
cabbage root maggot, Washburn's statement that the female lays 
only one or two eggs on a plant is repeated. In England we have 
frequently seen a row of five or six on a single root, and sometimes 
more. 
It would be unjust to leave the book at this point, for it contains 
much of interest and much of value, and is mostly couched in simple 
language. It will satisfy many who want to know something about 
insects, but it will not satisfy those who want really to know them. 
The author hopes that it will lead such to inquire further, and gives 
a list of useful works with that end, a hope which we can but cordially 
echo. 
