CONTENTS. V 



Page. 



Celery blights and how to control them, Streight 849 



Some apple diseases and their treatment, Brooks 849 



[Diseases of peaches in the Caucasus and resistant varieties], Bondartsev 849 



A contribution to the study of olive rot, De Michele 850 



P>uptive disease, or "exanthema," of orange trees in Australia, Brittlebank . . 850 



Permanganate of potash in viticulture, Truchot 850 



Chlorosis and its treatment with sodium nitrate and iron sulphate, Chancrin - . 850 



The subsequent influence of fungicides on grapevines, Vidal 850 



The condition for development of grape mildew, Ravaz and Verge 851 



Treatment of grapevine mildew in Bombay Presidency, Burns and Patwardhan. 851 



A new plan of attack on grape mildew, Faes 851 



The spread of American goosebeiTy mildew. Castle 851 



Two fungus diseases of tulip bulbs, Elenkin 851 



A new bacterium causing a disease of Matthiola annua, Briosi and Pavarino. . . 851 



Observations on Asarum europseum and its mycorrhiza, Schwartz 851 



Knobs and exostoses on trees, Lem^e 851 



Studies on gum flow and frost injuries of various trees, 1 1, Sorauer 851 



The Pennsylvania Chestnut Blight Conference 852 



Notes on the chestnut bark disease, Fulton 852 



[Longevity of mycelium and spores of Diaporthe parasitical, Rumbold 852 



The possibility of a medicinal remedy for chestnut blight, Rumbold 853 



The biological relations of Rhytlsma acerinum to various maples, Miiller 853 



Oak disease in 1909 and 1910, Paque 853 



The oak Oidium in France, Trinchieri and Mangin 853 



Oak Oidium in Sologne, Noffray 853 



A root disease of the Para rubber tree {Fomes semitostns), Bancroft 854 



Two new diseases of Sophora japonica, Turconi and Maffei 854 



A case of gummosis in teak, Honing 854 



Macrophoma excelsa infestans parasitic on Abies concolor in Russia, Ohl 854 



Lophodermium nervisequnni parasitic on fir needles, Mer 854 



Root disease of pine, Mangin 854 



Experiments with polysulphids and other fungicides in 1911, Pantanelli 855 



[The mechanical reduction of spray particles], Larue 855 



ECONOMIC ZOOLOGY — ENTOMOLOGY. 



Distribution and origin of life in America, Scharff 855 



Food of some well-lmown birds, Beal and McAtee 855 



Fish and game laws of New Jersey 856 



Capture of Raleigh by the wharf rat, Brimley 85G 



Life histories of Indian insects, II, Nowrojee 856 



Recent investigations in insect parasitism, Swezey 856 



The effect of heat on certain insect enemies of plants, Chaine 856 



Report of the entomologist, Tower 856 



Reports of entomological department, Stene et al 857 



Combating scale and other insects, Trabut 857 



Insect pests, Fabre 357 



Sugar cane insects in Trinidad, Urich 857 



The enemies of the olive, Papageorgiou 857 



Insects attacking the prune in the Pacific Northwest, Cordley 857 



Natural enemies of the banana occurring in Queensland, Tryon 857 



Insect pests of cacao, Guppy 857 



Coconut pests, Barrett and Mackie 857 



The enemies and diseases of the coffee tree in East Africa, Morstatt 858 



Forest entomology in the United States, Escherich. 858 



Tetriginse (Acridiinse), with descriptions of new species, Hancock 858 



A new pest to maize, French, jr 858 



A note on acid-fast bacilli in head lice, McCoy and Cleg^ 858 



Leafhoppers affecting cereals, grasses, and forage crops, Osbom 858 



What are we going to do about the froghopper, Carlee 859 



The spring grain-aphis or "green bug," Webster and Phillips 859 



Aphididse of southern California, VIII, Essig 859 



Woolly aphis, or American blight (Schizoneura lanigera), Froggatt 859 



A contribution to the knowledge of the Phylloxerinse, Grassi et al 859 



Natural control of white flies in Florida, Morrill and Back 860 



WTiite fly parasites and their introduction into Florida, Woglum 860 



