PREFACE 



The course of study outlined in the following pages is de- 

 signed to enable students to learn the more general features 

 of the structure of insects. It may serve as an introduction 

 to a more extended study of insect morphology. 



While the more obvious object of this course is the learn- 

 ing of certain facts, a much more important thing to be 

 gained is a training in methods of careful observation. The 

 student is urged, therefore, to do the work with great care. 



