REVIEW, 191 
a manner as possible, avoiding all scientific phraseology except 
such as is necessary to accuracy.” 
In our opinion these good intentions have been faithfully 
carried out, and a valuable volume has been produced. The 
only faults we can find are the two which are general in similar 
works ; firstly, that a great point is strained in including all the 
species treated of as injurious insects ; and secondly, the remedies 
suggested for their destruction will often be found quite im- 
practicable: these, of course, are more or less inherent, because 
from experience we all know that in certain seasons many species 
affecting certain trees can and do prove injurious, and the 
successful remedies against attack are in most cases yet to be 
learned. This will not be until the personality and nature of the 
insect-pest is thoroughly well known to the practical man, and 
the great aim of this and similar works should at present be to 
spread this much-needed information. It is also a great point 
to lead the practical man to distinguish between the gardener’s 
friends and the gardener’s foes: in no economic entomological 
work—except, perhaps, Curtis’s admirable volume—has so 
much attention been paid to those great allies, the natural foes 
of the noxious species. ‘The inclusion of many of the larger 
Rhopalocera, Sphingide and Bombycide, adds, perhaps, greatly 
to the entomological interest of the volume, but it is a great 
question whether they are not seriously out of place. Many bee- 
keepers will feel the consideration of Apis mellifica as an insect 
injurious to fruits to be a gross libel. 
This volume well deserves attention in this country, as many 
of the species treated of are either indigenous and equally 
destructive here, or have close allies with similarly noxious 
habits. For instance, the American blight, or, as Saunders has 
it, the woolly louse of the apple (Schizonewra lanigera), treated of 
at pages 18 and 27; the codling moth (Carpocapsa pomonella), 
p- 127; the pear-tree slug (Sclandria cerasi, Peck., recte Hrio- 
campa limacina, Retz.), p. 150; the imported currant worm 
(Nematus ventricosus, Klug, recte N. ribesti, Scop.), p. 889; and 
others are concisely treated of in well-illustrated and reliable 
articles. One or two assertions appear doubtful ; we should be 
inclined to be sceptical as to the normal double-broodedness of 
C. pomonella. EE. limacina and N. ribesii are both spoken of as 
passing the winter in the pupa state; here we know they exist 
