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DIVISION FIRST. 
HALF-HOURS WITH INSECTS. 
TWELVE PARTS. 
PART 6. 
PRICE 25 cts. 
THE 
Population of an 
e Tree. 
By A: -S. PACKARD, JR., 
EDITOR OF “THE AMERICAN NATURALIST;” AUTHOR OF “GUIDE TO THE STUDT OF INSECTS. 
“ OUR COMMON INSECTS,” &c. 
_ a a; 
BOSTON : 
ESTES & XjA.TTE^IA.T, 
143 "Washington Street. 
^2 
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% 
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*51 
