CONTENTS.[Introduction][Chapter I Insects]:(1) [What they are].(2) [Their principal characteristics].(3) [Their methods of developing].(4) [The principal orders].(5) [Their habits].(6) [Their role in agriculture].[Chapter II Collecting Insects]:(1) [Directions for collecting].(2) [Pinning and preserving a collection].(3) [Rearing and observing them while alive].[Chapter III The Grasshopper]:(1) [Brief discussion of the grasshopper].(2) [Field studies].(3) [Breeding cage observations].(4) [Study of specimen].[Chapter IV The House Fly or Typhoid Fly]:(1) [Discussion of the life cycle of the fly, its habits, danger from it and how it can be stamped out].(2) [Study of the fly and its work].[Chapter V The Mosquito]:(1) [Brief discussion of the life habits and stages of the mosquito].(2) [Observations and study].[Chapter VI The Cabbage Miller]:(1) [Brief discussion of the caterpillar, the chrysalis, the butterfly, and its work].(2) [Observations and study].(3) [Breeding work].