INDEX. 263 



PAGE 



Corn borer, European, and its control — concluded. \y 



History, foreign, .......... 4 



In the United States, ......... 5 



Control measures during the autumn of 1918, . . . . 8 



During spring of 1918, . . . . . . . .7 



Discovery of the insect, ........ 5 



Identifjang the species, ........ Q 



Plans made for further investigations, ...... 7 



Previous record in Massachusetts, ...... 6 



Quarantine measures enacted and their origin, .... 8 



Insects frequently mistaken for the European corn borer: 



Corn ear worm, . . . . . . . . . .04 



Cutworms, ........... 64 



Stalk borer .64 



Introduction, ........... 2 



Larvae, habits of, .......... 42 



Habits, unusual, .......... 48 



When attacking barnyard grass, ....... 47 



When attacking corn, . . . . . ... .43 



When attacking dock, ........ 40 



When- attacking Lady's Thumb, ....... 40 



Hatching 42 



Length of larval life -without food, ....... 48 



Molting, .... 47 



Life history, first generation, ........ 30 



Second generation, ......... 35 



Literature, . . • • • • • • • • • .68 



Names, common, applied to species, ....... 4 



0\dposition, details of, ......... 55 



Distribution of egg masses, ........ 56 



Duration of fertility, ......... 56 



Number of eggs deposited bj' each individual, ..... 56 



Parasites, European records, ........ 57 



Massachusetts records, ........ 57 



Predatory birds, .......... 59 



Insects, ........... 59 



Pupation, changes undergone by the larva previous to pupation, . . 50 



Changes undergone by the pupa, ....... 50 



Cocoon formation, ......... 49 



Location of pupa, ......... 49 



Process of pupation, ......... 50 



Seasonal history and development, number of generations, . . . 41 



Seasonal abundance, . . . . . . . . . 42 . 



Seasonal history, . . . . . . . • . ' ^V 



Summary, ........... 63 



Cows, feeding experiments, ......... 20a 



Pure-bred, testing for advanced registry, ...... 28a 



Cranberries, chemical studies, ......... 19a . 



Cranberry substation, seventh report of, . . . . . . . 105 



Blueberry M'ork, .......... 140 



Fertilizers, ........... 135 



Frost studies, 140 



Fungous diseases, .......... 105 



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