THE CANADIAN ENTOMOLOGIST. 211 



got rid of with a little combined effort and without any very great 

 expense. It is first necessary to acquire the knowledge that this book 

 provides of the life-history and habits of the insect, and then to carry 

 out carefully the remedial measures that have proved effective in a 

 variety of instances. It is surprising to learn how successful intelligent 

 efforts for the abolition of mosquitoes have proved in many places, and 

 how comparatively easy it would be to adopt similar measures almost 

 anywhere in mosquito-infested neighbourhoods. 



One of the most interesting parts of the book is that on maiaria, 

 yellow-fever and other diseases which it is now proved are transmitted by 

 the bites of mosquitoes. This is a subject of the deepest interest to the 

 medical profession, and of the utmost importance to dwellers in tropical 

 and sub-tropical regions. The author gives a concise account of the 

 researches that have been made in various parts of the world, and the 

 positive conclusions that have been arrived at ; he also furnishes a 

 complete life-history of Anopheles maculipennis, and points out the best 

 methods of dealing with it and other disease-bearing species. 



Enough has now been said to show the absorbing interest of the work 

 and its value not only to those who live in mosquito-infested regions, but 

 also to the medical profession in particular and to all who are attracted 

 by the study of nature in any of its aspects, or who wish to know the 

 results of the latest researches regarding a subject of great scientific and 

 world-wide importance. C. J. S. B. 



Reports of the Experimental Farms of the Dominion for 1900. — 

 Ottawa : S. F. Dawson, 1901. One Vol., 8vo., pp. 494. 



In these annual volumes, which are growing in size and value from 

 year to year, may be found a vast fund of information on every variety of 

 topic that can be of use or interest to the farmer, fruit-grower, gardener, 

 stock-raiser or poultry-breeder in any part of the Dominion of Canada. 

 They contain also much that is of value to those engaged in scientific 

 work, especially to the chemist, the botanist, and the entomologist. The 

 attention of the last mentioned we may draw to Dr. Fletcher's portion of 

 the Report for 1900 (pages 195 to 249), in which he describes a number 

 of the most serious insect attacks of the year, and relates the remedial 

 measures that can be recommended in each case. The outbreak of the 

 Hessian fly in Western Ontario is fully dealt with ; this is followed by 

 accounts of injury to wheat in the Northwest by the wheat-stem sawfly 



