CONTENTS. 
7 
The Regulative Action of Birds upon Insect Oscillations 3 
Turdidae (Thrushes), 5. — Saxicolidae (Bluebirds), 8. — Paridae (Chica- 
dees), 8. — Troglodytidae (Wrens), 8. — Mniotiltidae (Warblers), 9. 
— Vireonidae (Yireos), 10. — Ampelidae (Wax- wings), 11. — Hirun- 
dinidae (Swallows), 11. — Fringillidae (Finches), 11. — Icteridae 
(Blackbirds), 13. — Tyrannida^ (Flycatchers), 15. — Cuculidae 
(Cuckoos), 16. — Picidae (Woodpeckers), 16. — Columbidae (Doves 
and Pigeons), 16. — Perdicidae (Quails and Partridges), 17. — Dis- 
cussion, 17. 
Tables of the Food . . . . . .22 
Genera and Species Recognized in the Food. . . 27 
The Food Relations of the Carabidje and Coccinellid^e . 33 
Introduction, 33. — Family Carabidae, 37. — The Family as a Unit, 46. — 
Family Coccinellidae, 51. — The Family as a Unit, 54. — Sufficiency 
of Data, 55. — Relations to Birds, 56. — List of Gfenera and Spe- 
cies of Cicindelidae and Carabidae eaten by 423 of the Thrushes 
and the Bluebird, 57. — Tables of Food, 59. 
The Food of the Smaller Fresh Water Fishes . . 65 
Introduction, 65. — Family Aphredoderidae, 66. — Family Cottidae, 67. — 
Family Gasterosteidae, 68. — Family Atheriuidae, 69. — Family 
Cyprinodontidae, 70. — Family Umbridae,73. — Family Cyprinidae, 
74.— Food of the Young, 76. — Summary for the Family, 90. — 
Comparison of the Groups, 91. — Table of Food, 93. 
The First Food of the Common White-Fish (Coregonus clupe- 
iformis, Mitch.) . . . . .95 
