356 EXPEBIMENT STATIOlSr EECOED. [Vol.35 



further precaution the spraying of the trunks of trees with lead arsenate 

 about the first of September when the beetles begin to emerge from the trees 

 is suggested and the destruction of old badly-infested locust trees in the vi- 

 cinity of plantings is recommended. 



The other insects mentioned as infesting the wood of the trees include the 

 carpenter moth (Prionoxystus rohinice), the twig miner {Ecdytolopha insiti- 

 ciana), and Agrilus egentis. Several insects mentioned as attacking the young 

 twigs and leaves include the leaf miners, Chalepus dorsalis, C. nervosa, Graci- 

 laria lespedezwfoliella, Ldthocolletes ostensackenella, and L. robiniella; the 

 locust leaf skeletonizer (Gelcchia pseudacaciella) ; and the locust skipper 

 (Eudamus tityrus). Under the heading of puncturing insects several tree- 

 hoppers, etc., are mentioned. 



Twenty-eighth report of the state entomologist on tlie noxious and bene- 

 ficial insects of the State of Illinois, S. A. Forbes (Rpt. State Ent. III., 28 

 {1915), pp. IX +106, pis. 4, figs. 24). — This report consists of the following 

 papers: Recent Illinois Work on the Corn Root Aphis and the Control of Its 

 Injuries (pp. 1-62) (E. S. R., 33, p. 60), Observations and Experiments on the 

 San Jose Scale (pp. 63-79) (E. S. R., 33, p. 452), and Life History and Habits 

 of the Northern Corn Rootworm (Diabrotica longicornis) (pp. 80-86) by S. A. 

 Forbes; and the San Jose Scale (Aspidiotus perniciosus), by P. A. Glenn (pp. 

 87-106) (E. S. R., 34, p. 162), The paper on the northern corn rootworm is 

 based upon miscellaneous observations and operations of several years. 



Torty-fifth annual report of the Entomological Society of Ontario, 1914 

 (Ann. Rpt. Ent. Soc. Ontario, 4-5 {1914), PP- 152, figs. 27).— This annual report 

 consists of Reports on Insects of the Year, by A. Gibson (pp. 13-28) ; Applied 

 Entomology in Canada: Its Rise and Progress, by C. G. Hewitt (pp. 29-41) ; 

 Insects of the Season in Ontario, by L. Caesar (pp. 42-49) ; The Habits of 

 Spiders, by J. H. Comstock (pp. 49, 50) ; Brief Notes on Some of the Injurious 

 Insects of Quebec, 1914, by W. Lochhead (pp. 59-61) ; Insects Injurious in 

 Southern Quebec, 1914, by C. E. Fetch (pp. 70, 71) ; The 1914 Outbreak of the 

 Army Worm in Canada, by A. Gibson (pp. 72-75), substantially noted (E. S. R., 

 35, p. 56) ; The Army Worm in Ontario in 1914, by A. W. Baker (pp. 75-90) ; 

 Experiments with Poisoned Bran Baits for Locust Control in Eastern Canada, 

 by A. Gibson (pp. 97-102), substantially noted (E. S. R., 35, p. 56) ; An Im- 

 ported Red Spider Attacking Fruit Trees, by L. Caesar (pp. 102-107) (E. S. R., 

 33, p. 659) ; Cherry Fruit Flies, by L. Caesar (pp. 107-112), substantially noted 

 (E. S. R., 33, p. 561) ; The Control of Forest and Shade Tree Insects of the 

 Farm, by J. M. Swaine (pp. 112-116) ; etc. 



The theory of wetting, and the determination of the wetting power of 

 dipping and spraying fluids containing a soap basis, W. F. Coopek and W. H. 

 NuTTALL {Jour. Agr. Sci. [England], 7 {1915), No. 2, pp. 219-229, figs. 3).— An 

 extended discussion of the subject, including a review of the literature and a 

 list of 20 references. 



Common spray materials and other insecticides, J. G. Sanders {Wis. Dept. 

 Agr. Bui. 3 {1916), pp. 22, figs. 9). — This is a popular treatise. 



Locusts or grasshoppers, F. W. Ueich {Bui, Dept. Agr. Trinidad and Tobago, 

 14 {1915), No. 4, pp. 120-128, pi. 1). — Brief notes are given on the occurrence of 

 locusts in Trinidad and methods of combating them, together with an account 

 of locust destruction in South Africa. 



Combating locusts, Trabut {Bui. Agr. Algdrie, Tunisie, Maroc, 21 {1915), 

 No. 3, pp. 53-74' fio-"^- 1^)- — A discussion of the methods of combating migratory 

 locusts and of tlieir natural enemies. 



