INDEX. 



347 



Red spider, greenhouse, attacking cucumbers — Concluded 

 Spraying experiments in the laboratory. 

 Adhesive sprays, flour paste, . 



Soap, ..... 



Oil sprays : — 



Petroleum, Arlington oil, 



Arlington oil and Black-leaf 40, 

 Kerosene emulsion. 

 Vegetable, lemon oil, . 



Experiments on duplication of lemon oil. 

 Linseed oil emulsion. 

 Action on mites. 

 Sulfur and compounds of sulfur. 

 Barium sulfur, .... 

 Calcium sulfid, .... 

 Lime-sulfur and Nico-fume liquid. 

 Potassium sulfid. 

 Sodium sulfid, . 

 Sulfur, drj% 

 Sulfur, liquid. 

 Sulfur, soluble, . 

 Water, 

 Red spider, greenhouse, attacking other crops, 



Violets, . 

 Report of director. 



Treasurer, 

 Reports of departments : — 

 Agricultural economics. 

 Agriculture, 

 Botany, . 

 Chemistry, 

 Entomology, . 

 Horticulture, . 

 Microbiology, . 

 Poultry husbandry, . 

 Veterinary science, . 

 Roots and vegetables, comparative digestion coefficients, 

 Rose canker, control of, . 

 Chafer, a serious pest, 

 Rowen, digestion coefficients, . 

 Seeds, purity and germination tests, 

 Sheep, digestion experiments with, 

 Soil fertility, studies in, . 



Tests, .... 



Yield of cabbage, 1917 (North Soil Test), 

 Yields of corn, 1915 and 1917 (South Soil Test) 

 Soy bean hay, digestion coefficients. 

 Station: — 



Essentials for needed development, 

 Buildings, 



Land, poultry farm, 

 Tillson farm, 

 Tuxbury land, . 

 Men for new lines of work. 

 Maintenance, . 



Staff 



Changes in, . 



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164 



165 

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 166 

 168 

 168 

 164 

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 164 

 164 

 165 

 163 

 179 

 179 

 3a 

 17a 



19a 

 21a 

 33a 

 39a 

 51a 

 54a 

 55a 

 57a 

 61a 

 325 

 36a 

 51a 

 328 

 38a 

 241 

 55a 

 29a, 30a 

 30a 

 31a 

 329 



8a 



8a 

 9a 

 5a 

 la 

 3a 



