266 INDEX. 



PAGE 



Plant diseases: 



Affected by weather of 1919 14a 



Control measures, . . . . . . . . . .16a 



Lettuce drop, ........... 13o 



Onion smut, ........... 13a 



Orchard fruits, .......... 16a 



Potatoes, ........... 15a 



Plants, injuries due to severe winter of 1917-18, ..... 14a 



Light requirements of, ........ . 14a 



Potato diseases in 1919: 



Late blight, ........... 15a 



Leaf roll, .......... 15a 



Mosaic disease, . . . . . . . . . .15a 



Phoma disease, .......... 15a 



Spindling sprout, .......... 15a 



Potato spraying experiments: 



Bordeaux with arsenate of calcium, ....... 32a 



With arsenate of lead, ......... 32a 



With arsenate of magnesium, ....... 32a 



Poultrj', inbreeding, ......... 39a, 97 



Inheritance of broodiness, . . . . . . . .^ 38a 



Is the influence of the male or female more important? . . . 102 



Parasites, exclusion of, ........ • 103 



Poultry diseases: 



Elimination of, .......... 43a 



Legislation affecting, ......... 44a 



Prevention of, .......... 39o 



Studies of two new diseases, ........ 47a 



Propagation of apple trees on their own roots, ...... 73 



Publications during the year, ......... 7a 



Chemistry department, ......... 19a 



Microbiology department, ........ 41a 



Report (seventh) of the cranberry substation, ...... 105 



Report of director, . . . . . . . . . .4a 



Report of treasurer, . . . . . . . . . .11a 



Reports of departments: 



Botany 13a 



Chemistry, ........... 18a 



Entomology, ........... 31a 



Microbiology, 40a 



Poultry husbandry, .......... 38a 



Veterinary science, .......... 43a 



Scale insects, studies, .......... 36a 



Seed work, ............ 17a 



Sheep, digestion work, ..,......• 20a 



Soil studies: 



Liming, effects on Field A, ........ 19a 



Organic matter, microbial changes of, ...... 41ffl 



Peat, decomposition of, ........ • 42a 



Spraying experiments: 



Celery 13a 



Potatoes 32a 



With sulfoleum for plant lice, ........ 32a 



Station staff la 



Changes in, ........... 7a 



