130 INJURIOUS INSECTS OF IQ09Q AND IQIO. 
Fig. 76. Lamp chimneys in use. On the right a cage first used with Bumble Bees. 
use in Bruchophagus studies. In the photograph, the white lnes 
across the front are chalk lines made to warn the imprisoned insect 
and prevent its flying against the glass. 
7. Twe tiers of parasite breeding cages. Urbahns. 
