ENTOMOLOGY. 961 



Does it pay to spray? (Ontario Dept. Agr. Special Bui., 1897, Dec., pp. 8). — A 

 report is given of the results obtained in spraying 20 orchards in different parts of 

 the Province of Ontario in which the benefits derived from the application of Bor- 

 deaux mixture in reducing the amount of apple scab and other diseases was plainly 

 shown. Brief letters are given from the owners of the different orchards in which 

 are stated their opinions relative to the success and the value of the treatment. 



Spray calendar, E. G. Lodeman {New York Cornell Sta. Bpt. 1S06, pp. 335-343, figs. 

 4).— A reprint of Bulletin 114 of the station (E. S. E., 8, p. 149). 



The effect of spraying Bordeaux mixture on foliage, P. C. Harrison (Canad. 

 Hort., 21 (1898), No. 3, pp. 99-101). 



Experiments for the prevention of Botrytis cinerea on grapes, .). Burnat 

 (Prog. Agr. et Tit., 28 (1897), No. 47, pp. 591-593). — Reports successful experiments 

 with a powder composed of cement, steatite, and hydraulic lime, in the proportion 

 of 2, 3, and 5 parts. 



Experiments with fungicides for the prevention of grape anthracnose, G. 

 Gouikand and G. Bergeron (Rev. Tit., 7 (1897), No. 159, p. 5 ; abs. in Centbl. Bakt. n. 

 Par., 2. AM., 3 (1897), No. 21-22, pp. 603, 604).— Experiments were conducted with 

 solutions of copper sulphate, iron sulphate, and sulphuric acid for the prevention of 

 grape anthracnose due to Sphaceloma ampelinum. Ten per cent solutions of sulphuric 

 acid gave good results when applied to the vines early iu the spring. Similar results 

 were secured with the iron sulphate. The use of copper sulphate was not so successful. 



Results of experiments in 1896 to combat grape mildew, G. Cuboni (Bol. 

 Not. Agr., 19 (1897), pp. 401-411; abs. in Ztschr. Pflanzenkrank., 7 (1897), No. 6, pp. 

 355,356). — A number of fungicides were tested for the prevention of grape Perouos- 

 pora, comparisons beinj; made with Bordeaux mixture. 



Copper acetate was found inferior to Bordeaux mixture. A copper-soda mixture, 

 while about as efficient as Bordeaux mixture, was more expensive. Copper sulpho- 

 steatite, boral, and Statuti's mixture proved worthless. 



Anew grape parasite, L. Montemaktixi (AM. Istit. Hot. Univ. Paria, 1S97 ; abs. 

 in Ztschr. Pfianzenkrank., 7 (1897), No. 6, pp. -159, 360). — Under the name Aureobasidium 

 vitis album the author describes a new variety of this micromycete, which is parasitic 

 on the grapevine. 



ENTOMOLOGY. 



Brood XV of Cicada septendecem in Ohio, F. M. Webster 

 {Canad. JEJnt, 29 {1897), Ao. 10, pp. 225-229, Jigs. .?).— In this paper, 

 which was read before Section F of the American Association for the 

 Advancement of Science at its Detroit meeting, August 10, 1897, the 

 author gives an account of his study of Brood XV of the 17-year 

 locust. It was found to occupy the whole of the eastern half of the 

 State of Ohio with the exception of a strip along the lake region and 

 the northeastern counties of Ashtabula and Trumbull, and the east- 

 ern portion of Mahoning and Columbiana and most of Lawrence and 

 Galla counties in the southern part of the State. The brood appeared 

 to be less in numbers than formerly, and it is thought to be on the 

 decline, so that in time it will be known only in history. The later 

 appearing members of the brood were attacked severely by a tachina 

 fly, but the greatest enemies of the locusts seem to be various birds, 

 such as the English sparrow, crow blackbird, and robin. The first of 

 these seemed to be exceedingly fond of them, since they paid no atten- 

 tion to Pieris rapw and some other butterflies of the neighborhood. 



