IV CONTENTS. [Vol. 38 



Page. 



Filage of grapes, Ravaz 754 



Little leaf of grapevines in California, Bioletti and Bonnet 754 



Grape dowTiy mildew, Ravaz 754 



Grape downy mUdew at Montpellier in 1916, Ravaz 754 



Rainfall and grape downy mildew, Cadoret 755 



Sprajing for gi-ape downy mildew in rainy weather, Cadoret 755 



The treatment for do-wny mildew, Taboreau 755 



Treatment of grape do^vny mildew in southwest France, Capus 755 



Treatment of grape downy mildew, Capus 755 



The comparative efficacy of acid and alkaline Bordeaux sprays, Degnilly 756 



Acid and alkaline sprays, Vermorel and Dantony 756 



Acid and alkaline sprays, Cadoret 756 



Alkaline and acid sprays, DegruUy : 756 



Mixtures of lime and sulphur, Cadoret 757 



Rust of grapevines, Ravaz * 757 



Report of the plant pathologist, Brandes 757 



Geographical distribution of melanose and stem end rot, Fawcett 757 



Relation of temperature to growth of certain parasitic fungi, Fawcett 757 



The June drop of Washington navel oranges, Coit and Hodgson 757 



Algal disease of cacao, Rorer 758 



The diseases . . . of the coconut palm, Richards 758 



Leaf bitten diseases of coconuts, Ashby 758 



The white pine blister rust m Canada, McCubbin 758 



Diseases of Hevea brasiliensis in Malay Peninsula, Richards 759 



Clean clearing, pests, and diseases, Shelton-Agar . ..." 759 



Preventive measures against black thread [Phytophthorafaberi), Pratt 759 



Note on the development of chromogenic organisms in rubber, Eaton 759 



ECONOMIC ZOOLOGY — ENTOMOLOGY. 



Review of the grizzly and big brown bears of North America, Merriam 760 



The rat as a carrier of Spirochseta icterohssmorrhagise, Ido et al 760 



Animal parasites of rats at Madison, Wis., Moll 760 



Investigations of the value of nitrobenzol as a parasiticide, Chandler 760 



A study of the toxicity of kerosene, Moore and Graham 760 



The distribution of bird life in Colombia, Chapman 761 



Three new Mallophaga from North American birds, McGregor 761 



Eight new Mallophaga of genus Lipeurus from North American birds, McGregor. 761 



Field book of insects, Lutz 761 



Report of the entomologist, Van Zwaluwenburg 761 



War on greenhouse pests, Gossard 762 



Pecan insects. Turner 762 



The changa or West Indian mole cricket, Van Zwaluwenburg 762 



The citrus thrips, Horton 763 



Catalogue of the Hemiptera of America north of Mexico, Van Duzee 763 



Idiocerus scurra, a poplar leaf-hopper, Dickerson and Weiss 764 



The genus Ophiderma (Membracidae : Homoptera), Gibson and Wells 764 



The genus Harmostes, Gibson 764 



On the Chinese gall (Aphididae), Baker 764 



The com root aphis and methods of controlling it, Davis 764 



Control of the melon apliis, Chittenden 764 



Cattle lice and how to eradicate them, Imes 764 



Methods of control of clothes louse {Pediculus humanus [vestimenti]) , Moore 765 



[Papers on body lice] 765 



The pink bollworm of cotton, Scholl 765 



The pink bollworm in cotton districts of northeastern Brazil, da Costa Lima. . . 765 



Outbreaks of Philtrsea elegantaria on privet in Louisiana, Tucker 765 



Descriptions of some lepidopterous larvae from Mexico, Dyar 765 



A new pyralid from California, Dyar 766 



Brabantia rhizoleuca, redescribed, Dyar 766 



The genus Culex in the United States, Dyar and Knab 766 



The mosquitoes of the Pacific Northwest, Dyar 766 



The larva of Aedes idahoensis, Dyar 766 



A second note on the species of Culex of the Bahamas, Dyar 766 



Dytiscus as a destroyer of mosquito larvae, Chidester 766 



New American mosquitoes, Dyar and Knab 766 



