18 



irregular intervals. This series of bulletins can never command such 

 a general support of working entomologists as a publication issued at 

 regular intervals, and consequently, with the discontinuance of Insect 

 X/ife, economic entomologists lost a ready means of communicating 

 one with the other, and the speaker feels that the development of the 

 science has been hindered by its suppression. A publication depend- 

 ent upon subscription can never fill the place occupied by Insect Life, 

 ^ince it must cater to its readers and give considerable space to well- 

 known facts, whereas a publication independent of subscribers can 

 follow a definite plan and restrict its matter to that which is original 

 •or of great value on other accounts. 



GENERAL WORKS. 



There are several general works on economic entomology which have 

 been published, aside fi'om reports and other official publications by 

 State or station entomologists. One of the earliest and the best in a 

 great many respects is Saunders's Insects Injurious to Fruits. The 

 injurious species are grouped, according to the part injured, under 

 important food plants. Each account, while .brief, gives a resume of 

 the more important facts concerning the species. 



The early edition of Professor Saunders's work was closely followed 

 by Cooke's Injurious Insects of the Orchard, Vineyard, etc. , a work 

 Tvhich covers the entire field of economic entomology in less than 500 

 pages. The treatment of each species is necessarily brief, and while 

 the accounts are grouped according to food plants the systematic posi- 

 tion of a species and its synonymy are indicated. The work was pre- 

 pared particularly for the use of fruit growers and vineyardists in 

 California, where it appears to have found its principal sale. 



Dr. Weed's Insects and Insecticides (1891) treats of the more impor- 

 tant injurious insects and methods of controlling them in a volume of 

 less than 300 pages. The limited space made a rigid selection impera- 

 tive, and the account of each species is brief. It is an exceedingly 

 valuable work, and the following 3'ear was followed by Kellogg's 

 Common Injurious Insects of Kansas, which covered the same field as 

 the preceding work. The treatment is a little different, and a feature 

 -worthy of special mention is the brief diagnosis preceding the account 

 of each species. Dr. Smith's Economic Entomology (1896) is a work 

 prepared along very different lines from the preceding, and gives brief 

 practical accounts of all the more important injurious insects within 

 the limits of 466 octavo pages. The various accounts are necessarily 

 limited and the arrangement is systematic, a discussion of the injurious 

 or beneficial species of the different orders being preceded by a brief 

 account of ordinal and family characteristics. 



The same year The Spraying of Plants, by Lodeman, appeared, and 

 -while the scope of the work is greater than that of entomology, much 



