15 



[435 I 



branches, eight or ten feet from the ground. They were examined July 

 28th, eighteen days after they were put on : 



No. 1. 



Whole number of womia in all stages 



Number of empty pupa cases ^ 3g 



Number pupiB 227 



Number of enclosed but unchanged larvas 55 



220 



220 



Number of all stages in lowest bands 94 



Number of all stages in upper trunk bands §3 



Number of all stages in bands on limbs 43 



— _^ 



No. 2. 



(Same trees examined August 11th, two weeks later.) 



Number of pupa cases jg 



Number of pupse 34 



Number of larvae J5 



— __65 



Whole number in lowest bands 21 



Whole number in middle bands 23 



Whole number in bai^da on limbs 32 



— _65 



No. 3. 



(Same trees— August 25th, two weeks from last.) 



Number of pupa cases .' j 



Number of pupie 4 



Number of larvae unchanged 42 



Niimber in lowest bands 24 



Nmuber in middle bands 25 



Number in bands on limbs 7 



46 



46 



No. 4. 



(Same trees — September 9th, fifteen days later — Found larvae only.) 



Number in lowest bands 33 



Number Jn middle bands 3g 



Number in bands on limbs q 



No. 5. 



(Same trees— September 23d, two weeks later— Larvae only.) 



Number in lowest bands. ..''. 28 



Number in middle bands 22 



Number in bands on limbs 4 



— _54 



No. 6. 

 On the foiu"th of July, (1872,) I selected a smooth, thrifty apple tree 

 six niches in diameter, growing upon grass land, and well filled with 

 apples, bearing many marks of being wormy, but remarkably tenacious 



