294 



AGRICULTURE. 



{c) Will any of the insects in the larval or adult form 

 eat other insects in any stage cf development ? 



Water Forms. — If the stude.its have access tr ^ pond 

 or stream, it would be both interesting and instructive 



HG. lUI. — COLLECTING INSECTS. 



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

 stages of development in the water. 



(If) Take a quantity of the mud and water in wliich 

 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. 



IOC. 



{c) Observe all changes in their development, and make 

 careful notes and drawings of e?ch stage. 



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



