Elementary lessons on insects

PREFACE This book presents an outline for a brief introductory course in entomology. It embodies a new selection of materials for elementary instruction, and some new plans for their use; but its aim is the same as that of its worthy predecessors by other authors — sound knowledge of the essentials of insect structure and development and habits. These are things worth knowing. These are the things that must underlie all intelligent efforts at insect control.