1918.] CONTENTS. y 



Page. 



Potato diseases: What they are and how to control them, Edson 51!) 



Potato mildew or late blight, Bocher " 5.J9 



fTIie so-called Lahaina disease and other diseases of sugar cane], Agee 519 



I The Lahaina disease of sugar cane ), Renton 550 



Diseases and pests of sugar cane in tlie Pliilippines, Copeland 550 



Orchard diseases, Adams 55O 



Apple scab and methods of its control, Gunderson 55O 



Sprajdng experiments in 1916 for the control of apple blotch, Gunderson 551 



Results of eprajdng experiments at the Neoga Station, 1916, Brock 551 



One season 's experience with the dust spray, Perrine 551 



A bacterial disease of the Wragg cherry, Sackett 55X 



Abnormal blossom on black currant, Hatton and Amos 552 



A new disease of grapevines. Acarinosia in Navarra, A. Azanza 552 



Prevention of mildew outbreak, Gasc6n 552 



Control measures against grape downy mildew, Manso de Zuiliga 552 



Copper sulphate and copper sprays, Manso de Zuiiiga 552 



Treatment of grape downy mildew and Oidium, Manso de Zuiiiga 552 



A bacterial spot of citrus, Doidge 552 



A bacterial spot of citrus fruits, Doidge 553 



Bud rot of the coconut palm, Knowles 553 



Investigation of diseases of the rose 553 



Montana forest tree fungi. — I, Polyporacete, Wen* 553 



Observations on forest tree rusts. Weir and Hubert 553 



Practical method of preventing damping-off of coniferous seedlings, Scott 553 



How to preserve the oaks, Daniel 554 



Hevea canker, III, Rutgers 554 



Abnormal leaf fall of Hevea rubber, McRae 554 



Poly poms shorese 555 



The black zones formed by wood -destroying fungi, Rhoads 555 



Damage by spurs, Richards 555 



Tests with chemicals on control of nematodes, Schoevers 555 



ECONOMIC ZOOLOGY — ENTOMOLOGY. 



The vertebrate zoologist and national efficiency, Taylor 555 



Conservation of game in the National Forests and National Parks, Nelson 555 



What Big Lake [Reservation] means as a game refuge. Field. . . : 555 



Rio Grande bird reservation. New Mexico, Willett 555 



A visit to the heronry at Walker Lake, Holland 556 



Lost and disappearing wild bhds of Missouri, McAtee 556 



The bhds of the Anamba Islands, Oberholser 556 



Birds collected on various islands in the Java Sea, Oberholser 556 



The status of Aphelocoma cyanotis and its allies, Oberholser 556 



Notes on friugilline genus Passerherbulus and its nearest allies, Oberholser 556 



A review of the subspecies of the leach petrel, Oberholser 556 



The relationships of the fossil bird Palxodiendides vioiceanus, Wetmore 556 



How to attract birds in the East Central States, McAtee 556 



The agricultural vahie of bhd life in Louisiana, Kopman 556 



On the life history of a soil ameba, Wilson 556 



Ninth annual report of the State entomologist of Indiana, Wallace 556 



Report of the entomologist for 1916, Surface 556 



Report of the Dominion entomologist for 1916, Hewitt 556 



[Insects of economic importance in Cuba] 556 



[Entomological investigations] 557 



[Hawaiian insects] 557 



Annual report for 1916 of the zoologist, Warburton 557 



British insects and how to know them, Bastin 557 



Insect and arachnid pests of 1916, MacDougall 557 



Imported insect pests, Vrooman 557 



Grass and clover insects, Crosby and Leonard - 557 



Chortophila cilicmra and Thereva sp., pests of rye in Silesia, Oberstein 557 



[Potato and alfaha insects], Escomel 558 



Insects affecting vegetables, Bethune 558 



The role of insects as carriers of fire blight, Gossard 558 



Insects affecting coffee in Porto Rico, Van Zwaluwenburg 558 



A summary of our knowledge of insect vectors, MacGregor 558 



Selection and breeding of desirable strains of beneficial insects, Mally 558 



