294 



AGRICULTURE. 



(f) Will any of the insects in the larval or adult form 

 eat other insects in any stage of development ? 



WATER FORMS. If the students have access to a pond 

 or stream, it would be both interesting and instructive 



FIG. 101. COLLECTING INSECTS. 



to (a) collect forms which pass through some or all the 

 stages of development in the water. 



() Take a quantity of the mud and water in which 

 these water forms are found, together with algae, or 

 other food, back to the laboratory, and place with the 

 different species in breeding-jars similar to that in Fig. 

 100. 



(f) Observe all changes in their development, and make 

 rareful notes and drawings of er.ch stage. 



(d) If there are a number of any one kind, it would 



