1920] CONTENTS. V 



Page. 



Winter injury to fruit trees in Canada, 1917-18, Macoun 657 



Secretary's report on winter injury, Ueid 657 



Winter injury (to orclianls], Macoun 657 



I'rotectioM of Krape against parasites by cultural methods, Capus 657 



Tlie action of suliiinn* on Krai)e Oidiuni, ('ai)us j 657 



Grape downy mildew in Vienne, IDIS, Iial)erf;erie 657 



Grape downy mildew and overllovvs, 1918, Capus 657 



Pruninj; af,'ainst grape downy mildew, Salomon 657 



Treatment of iL^rape downy mildew and black rot, Capus 657 



Tiu)e and dosajre for the last downy mildew treatment, Capus 657 



The action of rain on sprays, Capus 657 



riiyilosticta leaf spot and daminng-olT, (Jnba and Anderson 658 



The chestnut hark disease and the niarki'l in Massachusetts, Kane 658 



White pine blister rust in New Hampshire 658 



Heport on white pine l)lister rust. State of Rhode Island, 1919, Sheals___ 658 



Fnnj;oid diseases of rubber in southern India. MacRae 658 



Rrown bast of Jlcrea Itni.silioisix, Kands 059 



The cause of brown bast in llevea brusiliensls, BobiliofE 659 



Method of steam sterilization of soil for controlling nematodes, Melchers. 659 



ECONOMIC ZOOLOGY- — ENTOMOLOGY. 



Birds beneficial to agriculture, Frohawk 659 



Di'.scription of a new chipper rail from Florida, Oberholser 659 



Insects of econonnc importance, Herrick 659 



Entomological work, Taggart 659 



Fungus insects and their hosts, Weiss and West 659 



[Insect enemies of the loganberry]. Brown 659 



Text-book of protozoology, Dotlein 659 



Biological control of mealybugs in California, Smith and Armitage 659 



The Lecania of Michigan, Pottit and McDaniel 660 



A new Myzocallis (Aphididse: Homoptera), Davidson 660 



Some poultry lice and mites found in Colorado, Babcock 6<J0 



Dusting and the .spray gun in calyx worm control, Childs 660 



The European corn borer again, Pettit 060 



European c(»rn borer and some similar native insects, Flint and Malloch- 601 



Proceedings of the conference on the European corn borer 661 



Monograph ()f the fungus gnats of the Canary Islands, Abreu 661 



The violet cecidomyiid (Pcrrisid affinU Kieffer), Vayssiere 6(51 



The Hessian tly in Indiana, Larrimer 661 



Pipunculus flies which parasitize the cane leaf hopper. Williams 661 



Additional notes on Bruchidse and their parasites, Bridwell 661 



The A B C and X Y Z of bee culture, A. I. and E. R. Root 661 



Fortieth annual report of Beekeepers' A.s.sociation of Ontario, 1919 662 



New genera and species of Hawaiian Encyrtidse, Timberlake 662 



New species of hymenopterous parasites of muscoid diptera, Bridwell 662 



Some observations on the leaf-hopper wasp, Williams 662 



Epyris extraneus Bridwell (Bethylidse), Williams 662 



FOODS — HUMAN NUTRITION. 



Effects Of enforcement of the Food and Drug Law of 1906, Foust 662 



Drugs and foods. Woods 662 



A pink yeast causing spoilage in oysters. Hunter 66;j 



Some considerations concerning the salting of fish, Tressler 663 



School lunches at Columbus, Ind 66;^ 



Cafeterias for industrial plants 063 



Dietitian supervises emi»lo.ves' meals, Becker 663 



Restaurant economics in England 663 



The metabolism of sulphur. 111, Lewis 663 



Accessory food factors (vitamins) in the feeding of infants. Mellanby__ 663 



Vitamin studies. — V, Antiscorbutic properties of raw beef, Dutcher et al- 664 



The i)athogenesis of deficiency disease, McCarrLson 661 



Deficiency diseases in Vienna 667 



The relation of untlernutrition to osteoporosis and osteomalacia, Alwens 067 



[Pellagra] 667 



I 



