72 



SPECIAL EXHIBIT OF JVIODELS OF PLANTS AMD 

 INSECTS AFFECTING- THEJTI. 



603. INDIAN CORN, OR MAIZE. 



Zea may 8. 



A hill of ripening corn reproduced in wax is exhibited as a center 

 piece about which to group the insects affecting this crop, 129 distinct 

 corn enemies being represented in the accompanying cases of the eco- 

 nomic exhibit. The corn plant is chosen and thus fully treated as rep- 

 resenting the most typical of the cereal crops of temperate North 

 America. The insect enemies represented in the surrounding cases are 

 treated separately, but arranged according to the nature of the injury 

 they do to the corn plant, namely, as affecting the root, stalk, leaves, or 

 ears. Each insect is shown, as far as possible, in its different stages, 

 together with the injury occasioned by it. Eemedies are given and 

 references made to the chief literature. (See Nos. 202-330.) 



604. COTTON PLANT. 



Gossypium herbaceum. 



A hill of ripening cotton reproduced in wax is exhibited as a center 

 piece about which to group the insects affecting this crop, some 36 dis- 

 tinct cotton enemies being represented in the accompanying cases of 

 the economic exhibit. The insect enemies represented in the surround- 

 ing cases are treated separately, but arranged according to the part of 

 the plant they injure, namely, stems, leaves, or bolls. (See Nos. 

 331-367.) 



605. COTTON WORM. 



Aletia xylina. 



Model in wax of a portion of the cotton plant, showing character- 

 istic defoliation of the leaves resulting from the attacks of the young 

 or mature larvae. (See No. 341.) 



606. COTTON BOLL "WORM. 



HelioiMs armiger. 



Model in wax of a portion of the cotton plant showing injury oc- 

 casioned by the larvae of the boll worm to the leaves, squares, forms, 

 and bolls of cotton. (See No. 358.) 



607. GOLDEN ROD. 



Solidago sp. 



Model in wax of a clump of Golden Rod with a number of the in- 

 sects which commonly frequent it disposed on the bloom, and an ac- 

 companying exhibit showing the wide variety of insect life known to 

 breed on it, and also the insects known to frequent it commonly for 

 the honey and pollen. 



