324 FARM AND SCHOOL PROBLEMS. 



Exercises. 



1. Make list of insects you can recognize by their song. 



2. Make a list of butterflies that you know by sight. 



3. Make a collection of insects and place in case, arranged to 

 show name. 



4. Make collection of butterflies and arrange in case for reference 

 in nature study. 



5. Place bodies of small animals, including lizards, snakes, etc., in 

 sealed air-tight glass jars, filled with alcohol. 



G. Keep cocoons in cages, so made that it will be convenient to 

 watch changes. 



7. Keep caterpillars in vivarium and watch changes. 



8. Make collections of eggs, larvae, chrysalis and butterflies. 



9. Make a collection to represent the different stages or changes in 

 the complete metamorphosis of the insect to be studied, as follows : Egg, 

 larva, pupae or chrysalis, and adult. 



10. Make collections to show the incomplete transformation in life 

 history of insects. 



11. Make a drawing to illustrate parts of an insect. How do 

 spiders differ from insects? Is the spider an insect? Why? 



Exercises. 



1. Watch an ant's nest to discover if any insects are carried to it. 



2. Watch hornets, wasps and spiders and observe how they catch 

 flies and other insects. 



3. Examine inside of Mud Wasp's nest for remains of insects. 



4. Place some Predaceous Ground Beetles in a vivarium. Feed 

 them cutworms, cabbage worms and other caterpillars. 



5. Make collections of beetles and bugs. Keep in a vivarium and 

 referring to the table page 322, feed them the kind of insects they attack 

 for food. 



6. Collect Tent Caterpillars early in the spring, and web-worms 

 early in autumn. Keep these in vivaria and note how many are killed 

 by parasites. 



7. Examine cocoons for parasites preying on the larvae. 



8. Look on tomato vines, grapevines, and other plants for sphinx 

 caterpillars. See if you can find on the caterpillars and cocoons, eggs of 

 microgaster flies. 



