318 FARM AND SCHOOL PROBLEMS. 



"even though no such moth is known." The discovery of the 

 moth later, proved the truth of his claim. 



Thus by sipping the nectar, and getting pollen upon its body 

 and carrying it to other flowers, cross- fertilization is carried on, 

 the competitive struggle for existence goes on; natural selection 

 is eternal and the survival of the fittest endures. 



The sfrong plant gains more vigor, the strong crowd aside the 

 weak and the insect has been the powerful agent in evolution 

 of plants, and plants have been dominating factors in the evolution 

 of higher forms of animal life and the higher spiritual, intellec- 

 tual and physical existence of man. 



William Hamilton Gibson has truthfully said: "With Dar- 

 win as our guide, and the insect as our Key an open sesame 

 the hidden treasure is revealed." 



The Butterfly 



There is a great order to which butterflies and moths belong. 



The order is called Lepidoptera, meaning scale-winged. 



The transformation or metamorphosis is complete. 



The four characteristic stages are: the egg, the larvae, the 

 chrysalis, the adult .butterfly. 



In writing or telling the life story of a butterfly let the pupil 

 outline the story under the following divisions : 



1. The laying of the egg. 



2. The hatching of the larva. 



3. The growth of the larvae. 



4. The change to the chrysalis. 



5. The change to the butterfly. 



6. The habits of the butterfly. 



Some Injurious Butterflies and Moths. 



The Adult State. The Larvae State. 



Common White Butterfly Gaibbage Worm. 



Black Swallow-tail Butterfly. . Celery, carrot and parsnip worms. 



Cresphontes Butterfly Orange-dog Caterpillar. 



Sphinx Moth Sphinx Caterpillar (tomato, .potato and 



tobacco worms). 



Bobbycinae Moths Silk Worm and Tent Caterpillar, etc. 



Gypsy Moth Leaf Caterpillar. 



