CuRCULio Spraying Experiments— Continued. 

Columns 
7 
8 
9 
10 
11 
12 
o 
.Plot 
Injuries 
prevented 
per cent. 
Yield 
increased 
per cent. 
Bushels 
Value 
ta 
No. 1 
No. 2 
No. 3 
times 
5 
I. Check 
Exper. 
69. 
54. 
1.5 
17.16 
6.2 
5.5 
7.8 
1.16 
2.75 
6 
II. Check 
Exper. 
48. 
40. 
7 
III. Check 
Exper. 
68. 
34. 
.75 
12.06 
3.75 
3.25 
11.66 
6.66 
2.5 
8 
IV. Check 
Exper. 
80. 
Orchard i {Plot I.). — By an examination of this table it may 
be seen (Section i, Columns i to 5) that all the apples on 4 trees 
of Plot I. out of III of the Ben Davis variety v^hich had been 
sprayed four times with arsenate of lead, were picked, measured, 
counted, and carefully examined between the i6th and the 20th of 
September, and that all the apples on 4 other trees of this plot out 
of 115 Ben Davises which had been left unsprayed as a check, were 
also picked, measured, counted, and similarly examined at the same 
time. These two lots of 4 trees each had been so selected at the 
beginning of the experiment from the whole number in each lot as 
to make the check lot the nearest possible duplicate of the lot which 
had been sprayed, except, of course, in the mere matter of spraying* 
SPRAYED ^4 TIMES 
NOT SPRAYED 
i^ • • ••• ,• "A-i-A- • • • -k • • • ••• 
• ••••^ . . . .1. . . . ^ 
••..••]•••••• 
••••••!•• ••^ •••• 
• ••••••• . .\^ . ^ •• 
• ••• ^•••••'•••••••^•••* 
• • 
ORCHARD NOI APPLES COUNTED FROM STARRETD TREES 
*The four sprayed trees used for comparison with the four check trees are those starred in 
the sixth row from the middle line of the orchard. The four trees used as checks are among 
those starred in the fifth and sixth rows from the middle line. 
