CONTENTS xi 



PAGE3 



PHCEBE's biography THE DEATH OF THE YELLOW WARBLER THE 



BED squirrel's FROLICS SOME VISITORS TO THE WALNUT TREE 



BIRDTIME REFLECTIONS THE BIRD OF TWILIGHT OR NIGHT HAWK A 



TRAGEDY IN THE DUNES STRANGE MISHAPS TO BIRDS THE TOAD's 



SOCIAL LIFE THE BIRD THERMOMETER OR INDIGO BIRD THE CHE- 

 WINK TAKING SPIZELL.\'S PORTRAIT 165-267 



VII. GENERAL OBSERVATIONS AND SKETCHES AFIELD. 



WITH EXAMPLES 



WALKS AFIELD AS AN AID TO INTERPRETATION OF NATURE RESULTS 



OF OBSERVATION THE FORMULATION OF PROBLEMS SEASONAL DI- 

 MORPHISM CASES OF ORIGIN BY ADAPTATION IN NATLTIE VARIANTS 



MUTANTS ECADS MEADOW ECHOES THE POND THE BROOK 



INHABITANTS NATURe's LABORATORY ANIMAL LIFE IN RAINY 



WEATHER PASTURE AND MEADOW INSECTS THE UNDER-LE.\F 



INHABITANTS THE SAND DUTiES NIGHT INSECT VISITORS TO OUR 



DOORWAY THE BLTVIBLEBEEs' NIGHT CAMP THE BIRDS AND 



squirrels' ASSEMBL.\GE GROUND THE HERMIT THRUSH AS A SELEC- 

 TIVE FACTOR 269-314 



VIII. ECOLOGY — INTERPRETATION OF ENVIRONMENT AS 



EXEMPLIFIED IN THE ORTHOPTERA 



SOURCES OF LIFE AFTER GL.4CL\TION — HABITATS OF PLANTS AND ANIM.\LS 

 BASE LEVELUNG AND SUCCESSIONS OF PLANTS AND ANULYLS ZOO- 

 GEOGRAPHY nature's RECL.\MATI0N of STERILE GROtrXD — THE 



HABITAT OF THE ORTHOPTERA THE TEXAN KATYDID THE HOME OF 



THE FORKED-TAIL K.\TYDID AND ITS ALLIES THE SWORDBEARER THE 



CAROLINA LOCUST THE SPRINKLED LOCUST THE VARIED-WING LOCUST 



BLATCHLEY's locust — THE TWO-STRIPED LOCUST AND ITS RELATED 



SPECIES THE LONG-HORNED LOCUST THE MOTTLED SAND LOCUST 



boll's LOCUST THE CLEAR-WING LOCUST THE LEATHER-COLORED 



LOCUST THE SHOHT-WING BROWN LOCUST — THE CLOUDED LOCUST 



THE DRINK OF THE GRASSHOPPERS — THE MOLE CRICKET — THE 



HABITS OF THE STRIPED MEADOW CRICKETS SOME HABITS OF FIELD 



CRICKETS KATYDIDS IN THEIR NIGHT RESORTS THE SHORT-WINGED 



GREEN LOCUST THE QUAKER LOCUST THE PASTURE LOCUST THE 



SHORT-HORNED LOCUST THE GREEN-LEGGED LOCUST THE GREEN- 

 STRIPED LOCUST THE GROUSE LOCUSTS THE LESSER LOCUST THE 



PENNSYLVANIA COCKROACH CLASSIFIED HABITATS OF VARIOUS SPECIES 



OF ORTHOPTERA BASED ON THEIR EGG-LAYING SITES, SHOWING THEIR 

 RELATION TO PL.\NT FORMATIONS IN GENERAL DEFINITIONS OF COM- 

 MON EN^^RONMENTAL COMPLEXES AND VARIOUS HABITATS OF PLANTS 

 GROUPED UNDER FORMATIONS 315-433 



INDEX 435 



