CONTENTS. V 



Page. 



Investigations on potato diseases (third report), Pethybridge 446 



The Alternaria blight of ginseng, Whetzel 446 



Leaf roll disease of potatoes, IV, Reitmair 447 



Leaf roll of potato, Kock and Kornauth 447 



Experiments with Bordeaux mixture as a cane dip, Rosenfeld 448 



Fruit trees and black spot canker, Carpenter 448 



A new canker-producing fungus, Potebnia 448 



Diseases of raspberry and loganberry 448 



Invasions of downy mildew in southwest France in 1911, Capus 449 



Conditions for development of downy mildew. — Temperature, Ravaz and Verge. 449 



Infection experiments with mildew in Hungary, Larue 449 



Anatomo-pathological investigations on roncet, Biasco 449 



The Panama disease of bananas 449 



Diseases of vanilla, Maublanc 450 



Notes upon tree diseases in the eastern States, Spaulding 450 



Fungus root rot, Home 450 



The fungus of the chestnut tree blight, Farlow 450 



A twig disease of elms, Eriksson 451 



Fungus diseases of Canada poplar in Santena, Voglino 451 



Hevea rubber stumps as possible carriers of disease 451 



Immortel canker. South 451 



Pestalozzia hartigi, a new parasite of the silver fir, Lagerberg 451 



ECONOMIC ZOOLOGY — ENTOMOLOGY. 



The vertebrates, Jaekel 452 



A pocket list of the birds of eastern Massachusetts, Morse 452 



The senses of insects, Forel 452 



Control of insects and diseases in grove, garden, and field, Prange 452 



The destruction of insects and other injurious animals, Clement 452 



Potassium cyanid as a larvicide, Gunasekara 452 



Fourth annual report of the state entomologist of Indiana, Douglass 452 



Forty-second annual report of the Entomological Society of Ontario, 1911 452 



Report of the division of plant protection for 1911, Brick 452 



Insect pests of cereals and fruit trees in Russia, Porcinskii 452 



Insect pests of fruit trees in Russian Central Asia, Porcinskii 453 



Notes on injurious insects observed, Jemmett 453 



Report on economic entomology, Jepson 453 



The enemies of the orange and lemon in Spain, De Salas y Amat 453 



Mango pests in Cavite and Rizal Provinces, Wester 453 



Insect enemies of poplars and willows, Lesne 453 



The enemies of Populus canadensis, Voglino 454 



The tarbagans and the plague, Tchaoushov 454 



Termites and living plants, Chaine 454 



New genera and species of North American Thysanoptera, Hood 454 



Instructions for the destruction of locusts 454 



The hemipterous enemies of cotton in Africa, Schoutedeu 454 



Recent studies on the spontaneous distribution of phylloxera, Grassi and Topi. 454 



The woolly aphis and the apple in Argentina, Huergo 455 



Wliite fly control, Berger 455 



Notes on Cuban white flies with description of two new species. Back 455 



A new coconut pest, Mackie 455 



The San Jose scale, Lahille 455 



The plum scale (Lecanium cerasifex), Chapais 455 



Native and foreign parasites of Diaspis -pentagona, Martelli 455 



Three common coccid enemies of the orange, Rosenfeld 455 



Gipsy and brown-tail moth suppression, Rane 455 



[Silkworm studies] 456 



Potato moths in Bengal in 1911, Woodhouse 456 



Notes on the life history of Nepticula sUngerlandella, Crosby 456 



Mosquitoes and river vessels, Balfour 456 



Some parasites of Simulium larvse and their effects on the host, Strickland 456 



On the life history of the ox warble (Hypoderma bovis), Peter 457 



How to get rid of flies, Stockbridge 457 



[Transmission of Trypanosoma hippicum] 457 



[Transmission of Trypanosoma hippicum by the house fly 457 



