106 THE CANADIAN ENTOMOLOGIST. 



table of genera ; this is followed by descriptions of each genus and a list 

 of the species belonging to it, with their geographical distribution. On 

 the plate a specimen of each genus is depicted, with beautifully clear 

 figures of structural details. 



The original plan of publication has been somewhat modified and 

 the work will now be issued in smaller parts, each containing a single 

 family of insects. The price will vary in accordance with the number of 

 pages and plates contained in the part, at the rate of i franc 60 per plate 

 and 20c. per page. The first part, consisting of 12 pages and 1 plate, 

 will thus cost 4 francs = So cents. The language adopted for the work 

 is French. It is to be hoped that the number of subscribers will be 

 sufficient to enable the enterprising publisher to complete the work 

 without loss ; he certainly cannot have any anticipations of profit. 



Fumigation Methods. — By Willis G. Johnson, New York : Orange 

 Judd Company, 52 Lafayette Place. One Vol., pp. 313. (Price, post- 

 paid, $1.00.) 

 The writer of this handy volume is well-known amongst economic 

 entomologists as the Apostle of Hydrocyanic Acid Gas, the virtues of 

 which as an effective insecticide he has never lost any opportunity of 

 extolling. He has now brought together in concise form the results of 

 his own methods as well as the experiences of others, and furnishes a 

 most convenient manual of information for fruit-growers, florists, nursery, 

 men and others who may be compelled to resort to this drastic means 

 of exterminating noxious insects. The material used for fumigation is of 

 such a deadly poisonous nature that it cannot be recommended for 

 general use and should only be adopted by experienced persons who 

 understand the necessary precautions and will see that they are carefully 

 carried out. The study of this book will give all necessary information 

 regarding the practical application of the gas, the apparatus required and 

 the appliances that have been found most satisfactory, and it should be in 

 the hands of everyone who has anything to do with fumigation. Besides 

 the gas referred to, an account is given of the use of Carbon Bisulphide, 

 which — with simple precautions — may be employed by anyone for the 

 destruction of household pests, underground vermin, mill or granary 

 insects. The book is fully illustrated and written in a clear and concise 

 manner. 



Mailed April 5th, 1902. 



