I20 FIELD ZOOLOGY. 



Do you find butterflies ? Moths ? 



Are they working in the shady depths of the wood- 

 land or in the fringe? 



Do the colors of these insects differ from the colors 

 of those you found in the expedition to the open fields? 



Look on tree branches, bushes, or tall weeds, and 

 even smaller plants for pupa cases. Look in the garden, 

 or on the forest trees, on fruit trees, and bushes for larv®. 

 Be sure to discover what each caterpillar is eating. 

 Bring home these caterpillars with sufficient food to last 

 them for some time. If you do not know where to get 

 any more of the same kind, take home plenty to last the 

 larva for the rest of its larval life. 



Once home, the plants must be freshened in water 

 if they were not put into an air-tight box on being cut; 

 and some sort of a place must be made in which to keep 

 your "finds." You will find that your caterpillars will 

 stay with you contentedly if they have the right kind 

 of food and plenty of it, and are not so crowded that they 

 frighten each other off. 



A good crawlery for your caterpillars is a large pan 

 with vertical sides. This will also hold water to keep the 

 twigs and leaves fresh ; and if you do not have too many 

 different kinds, one pan will likely keep all of them. 

 The pan must be cleaned each day; lift out the twigs, the 

 caterpillars, and any leaves that you may have there as 

 food, and return them after cleaning the pan. This pan 

 is useful in another way; most caterpillars must have 

 water to drink, and this will be supplied by the water in the 

 pan. It is really interesting to see a caterpillar stop 

 eating to drink up some water drop that it may have 

 found. 



Caterpillars moult frequently and rest occasionally 



