IV CONTENTS. [Vol. 38 



Page. 



Clean clearing of rubber estates, Sharpies and Belgrave 847 



The production and use of fuel wood, Secrest 847 



Measuring woodland products, Berry 847 



Distribution of softwood lumber in the Middle West, Pts. I, II, Butler 847 



DISEASKS OF PLANTS. 



Report of the division of plant pathology, Carpenter 848 



Plant diseases, 8tewart and Barrus 848 



Notes on South Indian fungi. McPiae 848 



Diseases of woody plants in North Africa, Maire 849 



Rhizopus maydis, a new species, Bruderlein 849 



Grain smut, Lo Priore 849 



Results of corn disease investigations, Hoffer and Holbert 849 



Greenhouse experiments on the rust resistance of oat varieties, Parker 849 



Tylenchus Iritici on wheat in Virginia, Fromme 850 



Sclerotinia trifoliorum, the cause of stem rot, Gilbert and Bennett 850 



Cabbage diseases, Harter and Jones 850 



Short smut on cholam, Sundararaman 850 



A Sclerotinia parasitic on Maithinla vallesiaca, Lendner 850 



Wilt diseases of okra and the Verticillium Avilt problem, Carpenter 851 



Varietal resistance of peanuts to Sderolium rolfsii, McClintock 851 



Sugar-cane fungi and diseases of Porto Rico, Johnston and Stevenson 851 



An epiphytotic of cane disease in Porto Rico, Stevenson 852 



Tobacco wildfire, Wolf and Foster 852 



Brown rot of fruit. — Investigations in Hawke's Bay, Esam 852 



Root knot of fruit trees, Campbell 852 



Field experiments with crown gall, 1913-1917, Ness 852 



Black spot of apples [and pears], Taylor 852 



A fungoid disease attacking pears, itelmsing 853 



Black knot of plum and cherry, Walton 853 



The anthracnose disease of the raspberrj^ and related plants, Burkholder 853 



Ammonium sulphid wash for vVmerican gooseberry mildew. Eyre and Salmon. 853 



The supposed injury to vines by sulphurous anhydrid, Trotter 853 



Anthracnose or black spot of the vine, de Castella and Brittlebank 853 



New disease of the pineapple reported, Mackie 853 



The crown canker disease of rose, Massey 854 



Cronariium cerebrum on Pinus resinosa, Weir and Hiibert 854 



Significance of diseases in Malayan rubber plantations. Sharpies 854 



Bark canker in Ilevea brasiliensis, Sharpies 854 



Spike disease of sandal , Coleman 855 



The effect of Roentgen and ultraviolet rays upon fungi, Trumbull and Hotson. 855 



The treatment of fungus diseases by spraying, Salmon and Eyre 855 



The conduction of potassium cyanid in plants, Elliott 855 



ECONOMIC ZOOLOGY — ENTOMOLOGY. 



Food habits of the swallows, a family of valuable native birds, Beal 856 



The crow and its relation to man, Kalmbach 856 



Diagnosis of a new pycnonotine family of Passeriformes, Oberholser 856 



British birds, Thorbum 857 



The control of imported pests recently found in New Jersey, Weiss 857 



[Insects and insect control in Oregon] 857 



Report of Dominion entomologist for year ended March 31, 1917, Hewitt 857 



Insect pests [in Grenada], Watts 857 



[Economic insects of Japan] 857 



War on greenhouse pests, Gossard 857 



Important foreign insect pests on imported nursery stock in 1917, Sasscer 857 



Notes on insects injiuious to coffee, Anderson 857 



Insects and camp sanitation, Felt 857 



Graphically illustrating distribution of injury by an insect pest, Hartzell 858 



Toxicity of volatile organic compounds to insect eggs, Moore and Graham 858 



Influence of molasses on the adhesiveness of arsenate of lead, Hartzell 858 



Spreaders for arsenate sprays, Lovett 858 



Appearance of the male Cnransius morosus and its longevity, Fouchor 858 



The eggplant lace bug in Porto Rico (Corythvrha monacJia), Cotton S5S 



Key to species of genus Ceresa occurring north of Mexico, Gibson and Wells.. . 858 



