78 



THE NEW INSECTARY. 



The greenhouse portion is provided with benches for our 

 breeding cases and breeding jars, tables for photographic out- 

 fit, earth beds for growing food plants of insects, places to 

 plant trees and shrubs, an aquarium, cement walks, curtains 

 for shading plants from too much sunshine, and is heated and 

 gets its water supply from the main heating and water plants 

 of the institution. The glass part of the insectary, further, is 

 divided into a "warm room" and "cold room," the former 

 20 by i8, the latter 15 by 18 feet, a glass partition dividing 



Fig. 63. — A breeding jar. 



the two. In the warm room a summer temperature, or even 

 tropical conditions may be obtained during the winter, if 

 desired, while the cold room, although it can be warmed if 

 needed, is intended for the small trees, shrubs or breeding 

 cages which we wish to keep at the outside temperature. The 

 sash is made of the very best of seasoned Gulf Coast cypress, 

 and modern ventilating and lifting machinery (top and sides) 

 has been installed. 



The walls designed to keep out the cold, and to help main- 

 tain an equable temperature inside deserve special mention. 

 They are laid on an eight-inch concrete footing. Above this 

 is 12 inches of concrete foundation to the floor line, the walls 

 proper, y/2 feet high from floor line to sash, being composed 



