ENTOMOLOGY. 263 



Fairy ring of carnations {Jour. Hort, 52 {1900), No. 2683, jx 1S8).— Notes the 

 occurrence of Heterosporium echinulatum on leaves of carnations and recommends 

 spraying or sponging diseased plants with a solution of potassium permanganate. 



The clematis disease, J. Jensen {Amer. Florist, 15 {1900), No. 625, pp. 1349, 

 1350). — A disease caused by nematodes, and methods of prevention. 



Diseased iris leaves and roots {Jour. Hort., 52 {1900), No. 2700, p. 559). — Notes 

 the occurrence on iris of a fungus similar to if not identical with Botrytis galanthina. 

 The leaves are first attacked, later the roots, the plant not surviving the injury. 

 Rotation and fertilization are recommended as remedial treatments. Removing 

 diseased parts of plants and dusting with powdered copper sulphate are also advised. 



Diseases of the rose, B. D. Halsted {Florists' Exchange, 12 {1900), No. 13, pp. 

 333, 334, fig. 1; also Amer. Florist, 15 {1900), No. 617, pp. 1033-1037).— In a paper 

 read before the American Rose Society, March 28, 1900, the author describes a num- 

 ber of the more common diseases of the rose and suggests methods for treatment. 

 The diseases described are nematodes, black sjiot, rose-leaf blight, rose mildew, 

 downy mildew, rose rust, rose anthracnose, leaf spot, black speck, and bronzing. 



Diseased violets {Jour. Hort., 52 {1900), No. 2683, p. 188).— 'Meniions attack 

 of Peronospora violx on violets. Recommends better ventilation and sprmkling 

 powdered lime over diseased plants. 



Liquid and powder fung'icides, P. Carles {Messager Agr., 5. ser., 1 {1900), 

 No. 7, pp. 260-263). — Formulas and directions are given for the preparation of Bor- 

 deaux mixture of different strengths. Burgundy mixture, and a powder which con- 

 sists of 750 gm. basic copper acetate and 1,250 gm. of pulverized plaster. 



Spraying- of fungicides, E. Bringuier {Messager Agr., 5. ser., 1 {1900), No. 5, 

 pp. 171-174). — A critical statement on the preparation and application of fungicides. 



A cyclone spray pump {Queensland Agr. Jour., 6 {1900) , No. 5, p. 381, fig. 1). — 

 A cheap form of spray pump is figured and described. 



ENTOMOLOGY. 



Report of the State entomologist, E. P. Felt {Bui. N'evj York 

 State Mus., 6 {1900), No. 31, p^. 531-653).— Th^ report contains a 

 general discussion of the work of the entomologist for the year in the 

 field, oflice, and laborator}^ Brief notes are given on the biological 

 and economic relations of the following insects: Raspberry sawfly, 

 locust borer, elm-leaf beetle, asparagus beetles, antiopa butterfly, 

 forest tent caterpillar, and the seventeen-year cicada. 



Experiments were conducted with arsenical poisons as treatment for 

 the attacks of the elm-leaf beetle. Twigs of the English elm were 

 placed in small water bottles which were kept in experiment cages. 

 The leaves were sprayed by means of an atomizer with different 

 arsenicals. The results obtained from these experiments indicate that 

 arsenate of lead is slow in its action, but experiments conducted in the 

 field indicate that when the application is thorough it is a very effective 

 insecticide. Paris green, London purple, Paragrene, and lead arse- 

 nate were the arsenicals used in these experiments. An experiment 

 upon nearly full-grown forest tent caterpillars demonstrated that this 

 insect could be controlled by arsenical applications and that arsenate 

 of lead was an effective spray for this purpose. 



