76 NATURE-STUDY LESSONS. 



10. (a) Which part of the moth is first protruded ? 



(d) Describe how little by little the entire insect 

 escapes from the cocoon. 



11. Describe the insect in its first appearance. 



1 2. Describe it after its wings are dry. 



13. (a) Compare this moth with the cabbage-butterfly 



in respect to form of antennae and time of 

 day in which each prefers to be on the wing. 

 (d) Infer a general distinction between a moth 

 and a butterfly. 



14. (a) Collect the larvse of other insects and treat 



them in a similar way to those of the cecropia 

 emperor moth. Those ofthepromethea may 

 be collected on the wild cherry-tree and 

 those of the polyphemus on plum-trees, the 

 woodbine, grapevines and lilac-bushes. 

 (^) Observe how the cocoons are fixed on the leaf 

 and, in the case of the former, how the leaf 

 is fixed to the branch. 



XXI.-THE GRASSHOPPER. 



Few, if any, insects are better adapted for the study of insect-structure 

 than the grasshopper. 



Besides making observations in the garden and in the field confine a fev^r 

 grasshoppers in a wire cage improvised for the purpose. Make four frames 

 with light slats ; cover these with fly-netting, tack them together and cover 

 the top with the netting. Then take a shallow box containing a few inches 

 of earth. In it plant both long and short grasses. Over this box, set the 

 frame. Such a cage will allow free circulation of air which is absolutely 

 necessary to the life of the grasshopper. 



A. General Description. 



I. Describe the grasshopper, the shape of the body, 

 the number of its parts, how the head is set on the body, 

 the collar, the number of legs and wings — their position 

 on the body. 



