380 TIIK CANADIAN KNToMol-OOIST. 



it in the annual reports on tl)e Natural History of the State, owing, no 

 doubt, to lis ^reat size. This unfortunate decision has caused the edition 

 to be limited to a thousand copies distributed by the Department, and 300 

 placed on sale by the Nature Publishing Co., 1,530 Park Ave., Indian- 

 apolis, Ind., from whom they may be procured at $4.50 each, postage or 

 express charges extra. Karly application is recommended, as this small 

 edition will do doubt be soon exhausted. C. J. S. B. 



The Housk Ki.v : A Study of Its Structure, Development, Bionomics 

 and Kconomy. By C. Gordon Hewitt, D.Sc, Dominion Entomologist, 

 Ottawa, and late I.ecturer in Economic Zoology in the ITniversity of 

 Manchester. Manchester, 1910. 



The three parts of Dr. Hewitt's valuable Monogra|»h on the House- 

 Fly, which were published in the Quarterly Journal of Microscopical 

 Science in IQ07, 1908 and 1909, resptctively, have recently api>eared in 

 book form as a publication of the Manchester University Press. The 

 book also includes several appendices, in which additional facts and 

 information of much practical im|>ortance are given for the first time. 



The first part gives a very full account of the anatomy of the fly, the 

 second of the breeding habits, development and anatomy of the larva, the 

 third part of the bionomics, allies and parasites of the house-fly and its rela- 

 tions to human disease. Each of these parts is concluded with a useful sum- 

 mary of the facts discussed, and a full bibliography. In the appendices 

 further observations are given on the dissemination of the organisms of 

 human disease by house-flies, breeding habits, preventive measures, etc. 



'I'he book is illustrated by nine beautifully executed lithographic 

 plates, the first one giving coloured figures of the house-fly and several 

 allied forms commonly niet with in houses ; the others illustrating 

 anatomical details of the adult fly and of its larva and pupx, except the 

 last plate, on which the characters of the various flies that ate associated 

 with the house-fly and of the enemies and parasites of the latter are 

 depicted. 



A brief perusal of a few images of the letterpress and a mere glance 

 at the illustrations are sufficient to leave no doubt in the mind of the 

 reader as to the high character of this work and the thoroughness and 

 patience with which the author has i)rosecuted his investigations. 



Now that the work is in book form, and is accessible to all, it is to 

 be hoped that its valuable lessons will be the means of stimulating effort 

 in the eradication of the many evils for which the house-fly is responsible. 



Miiiled November nth, iqio. 



