INJURIOUS INSECTS OF I90Q AND I9QIO. LZ 
cn 
NOTES ON WORK OF INSECTARY AND 
EXPERIMENTAL GARDEN. 
In 1909 three hundred and fourteen different experiments were 
carried on in the insectary. Two hundred and fourteen insectary 
experiments is the record for 1910, which really represent a much 
larger number, included as “‘sub-experiments.” A large number of 
insects, sent in to us for identification, were reared to maturity, as 
well as much parasitic material. 
Fig. 73. A simple device used as breeding cage. Urbahns. 
A parasite breeding-cage, built by Mr. Urbahns, and found 
quite satisfactory, is shown in Fig. 77. Cheese-cloth forms the 
upper half of the back and entire end of each set of cages, the par- 
titions between the individual cages being of board. The front, as 
