AGKICULTTTRE AT THE AMERICAN ASSOCIATION". 585 



Certain Water Bacteria with DvsiMiterv Iinniiinc Serum, by D. II. 

 Bergey; (lerinicidal Properties of (ilyceriii in Relation to Vaeeine 

 Virus, by M. J. Koscnau; and Th(^ Bacterial Flora of the Oyster's 

 Intestine, ])y C. A. Fulhn-. which showed a liora characteristic for the 

 ojHter. 



ECONOMIC ENTOMOLOGY. 



The papers on economic entomology were all presented before the 

 Association of Economic Entomologists, which met December 26 and 

 27, or the Society for the Promotion of Agricultural Science. Several 

 of these papers were also read at the zoological meetings. 



Before the Association of Economic Entomologists the address of 

 the retiring president, E. P. Felt, was on the subject of The Litera- 

 ture of American Economic Entomology. Notes were given on the 

 extent and value of the various kinds of entomological publications, 

 including bulletins, reports, journals, books, indexes, and more pre- 

 tentious forms of literature, as well as newspaper articles. The great- 

 est amount of literature has been written on the subject of the Rocky 

 Mountain locust, followed )>y the San Jose scale, gypsy moth, chinch 

 bug, cotton worm and boUworm, codling moth, Hessian fly, and peri- 

 odical cicada, in the order named. 



C. L. Marlatt gave an illustrated talk on the economic entomology 

 of Japan. This included an account of the author's itinerary in his 

 recent studies in Japan, with notes on the entomological work and 

 literature in Japan, the institutions and laboratories for studying 

 entomology in that countr}^ and special notes on their work on the 

 insects of rice, deciduous fruits, citrus fruits, tea, lotus, bamboo, etc., 

 and on the silk industry. 



E. P. Felt reported observations on the Grapevine Root Worm, an 

 extensive outbreak of which occuiTed in Chautauqua County during 

 the past season. Oviposition occurred about 7 da3^s after the appear- 

 ance of the adult beetles. The eggs were deposited from July 3 to 

 August 19. The period of oviposition was about 3 days and the eggs 

 were laid in clusters of 5 to 75. Each female laid about 100 eggs. 

 The larva? were found to travel 2 or more yards per hour and were 

 able to make their wa}'^ through 12 in. of soil in a comparatively short 

 tune. Cultivation of the soil was apparently etiective against the 

 pupa>. A moditied curculio catcher was used with good results in 

 catching the beetles. The insects were also destroyed by spraying 

 with arsenate of lead in the laboratory, but in the field this insecticide 

 gave negative results. 



Dr. Felt also reported upon Results Obtained with Certain Insecti- 

 cides. It was found that a 20 per cent mechanical mixture of crude 

 petroleum applied April 7, when followed b}^ an excessively rainy 

 period, destroyed nearly all the scales without injuring the trees. Pear 



