1917] CONTENTS. V 



Page. 



Experiments for control of potato canker, Werth 249 



Potato leaf roll in France, Foex 249 



Potato leaf roll, Appel and Schlumberger 249 



Chlorosis of beets, Amaud 249 



Crown gall of sugar beets, Peters 249 



Sweet potato diseases, McClintock 249 



Sclerotium disease of tobacco, Westerdijk 249 



The parasitism of Coryneum on trees and shrubs, Amaud 250 



Hail effects on trees, Amaud 250 



Behavior of apple canker in two grafts differing in susceptibility, Dangeard. . 250 



A new Oospora on pear, Mangin 250 



Biological observations on pear rust. Trotter 250 



Disease of apricots in the Rhone Valley, Chifflot and Massonnat 250 



Some observations on witches' brooms of cherries, Schmitz 250 



Biology of Exoascus deformans and preventive treatment, Peglion 250 



Substitute for self-boiled lime-sulphur and other sprays for peaches, Gillam. . . 251 



A new canker disease of Prunus caused by Valsa japonica n. sp., Hemmi 251 



Dieback in currant, Appel and Werth 251 



Peronospora in 1915, and its control, Marescalchi 251 



Treatment of Peronospora during 1915, D' Albaretto 251 



The germination of the winter spores of Plasmopara viticola, Ravaz and Verge. . 252 



The present status of the coconut bud rot disease, Johnston 252 



Fungi parasitic on the tea plant in northeast India, V, VI, Tunstall 252 



Tumors on Chrysanthemum frutescens, Laubert 252 



Canker of oleander, Ilariot 252 



A new fungus parasitic on Ceara rubber trees, Vincens 252 



Diseases of Hevea brasiliensis in the Amazon Valley, I, II, Vincens 252 



Diseases of Hevea in Ceylon. Petch 253 



The effects of asphyxiating gases on forest vegetation, Do6 253 



A beech disease due to Nectria ditissima, Guinier 253 



Galls on juniper, Hariot 253 



Peridennium strobi on Swiss pine, Werth 253 



Dry rot, Groom 253 



ENTOMOLOGY. 



The nature of the polyhedral bodies found in insects, Glaser and Chapman 253 



Influence of atmospheric humidity on insect metabolism, Headlee 254 



Determining wind dispersion of the gipsy moth and other insects, Collins 254 



A method for the study of underground insects, McColloch 254 



Report of the State entomologist of Connecticut, 1916, Britton 254 



Fourteenth annual report of the State entomologist of Montana, Cooley 255 



Notes on several insects not heretofore recorded from New Jersey, Weiss 255 



Report of the entomologist, Wolcott 255 



Report on tobacco and vegetable insects. Cotton 256 



Foreign insect pests collected on imported nursery stock in 1916, Sasscer 257 



Some methods of colonizing imported parasites, Grossman 257 



Efficiency and economy in grasshopper control. Ball 257 



The seventeen-year locust in western New York, Hadley, jr., and Matheson. . 257 



Biological and systematic notes on British Thysanoptera, Williams 257 



The green soldier bug {Nezara hilaris), Whitmarsh 258 



Mercurial ointment, an effective control of hen lice, Lamson, jr 258 



Distribution of Ohio broods of periodical cicada, Gossard 258 



Aphid eggs in Texas (Lat. 30°, 30^), Yingling 258 



New tree banding material for control of gipsy moth, Burgess and Griffin 258 



Present status of the gipsy and brown-tail moths in Connecticut, Davis 259 



Crambid moths and light, Ainslie 259 



"Side injury" and codling moth control, Felt 259 



Recent antimosciuito work in Connecticut, Britton 259 



Influence of salinity on development of mosquito larvae, Chidester 259 



Biological study of important fish enemies of salt-marsh mosquitoes, Chidester. 260 



Results of ten years of experimental wheat sowing to escape Hessian fly, Dean. 260 



Wind as a factor in the dispersion of the Hessian fly, McColloch 260 



The protection of dairy cattle from flies, Cory 260 



The radish maggot and screening, Parrott 261 



Analysis of white grubs and May beetles and its economic application, Davis. . 261 



The spinach carrion beetle {Silpha hituberosa), Cooley 261 



