104 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 
TaBLE XX XIX.—Band records taken from ten apple trees during 1908. 
Number of 
Number emerging 
No. of ete of larvee moths. 
record. pe = and 
8: pupe 
1908. | 1909. 
1 | July 18 84 66 i bee 
2| July 25 77 69 1 
By Nie Sal 121 87 13 
4| Aug. 8 90 25 27 
5 | Aug. 14 54 4 aan 
6 | Aug. 22 52 1 38 
7 | Aug. 29 DOR Es eee 14 
8 | Sept. 5 Dileteere 25 
9 | Sept. 12 1027 | he ceelee ee 43 
10 | Sept. 19 TOD So soe 92 
11 | Sept. 27 LOM see she 56 
12 (Ore, 08 Pe eee 26 
13 | Oct. 12 iy | aes | 50 
14| Oct. 18 Sot ee Be Ne 20 
15 | Oct. 26 LOM eee ee 7 
16 | Nov. 2 | Culee eee ell 
17 | Nov. 9 PELE eek il 
993 252 | 449 
TasLe XL.—Band records of 1908. Summary of Table XX XIX. 
Larve from band collections. Seige 
Transforming larvee of band collections.......-. 35.9 
Wintering larvee of band collections..........-- 64.1 
Relative proportion of first-brood larve.....-..-. 50 
Relative proportion of second-brood larve......- 50 
Transforming larve of first brood.....-....--.-- 67.7 
Wintering larve of first brood...............--- 32.3 
Parasitized, injured, and dead larve.......-..-.- 30. 1 
WEATHER RECORDS FOR 1907, 1908, AND 1909. 
During the three seasons that the life history of the codling moth 
has been studied in northwestern Pennsylvania (1907-1909) daily 
records have been kept of the maximum and minimum temperatures, 
together with other climatic conditions. In preparing the tempera- 
ture curves shown in figures 28-30 use has also been made of the 
weather records of the Weather Bureau made at Erie, Pa. 
The climatic conditions have been strikingly different during the 
three seasons. The year 1907 was marked by an abnormally low 
temperature, a late spring, and an early fall with a rather high pre- 
cipitation for the summer months. The month of May was the 
coldest on record during a period of eighteen years. In 1908, on the 
contrary, the spring was very early, the mean temperature was above 
normal, and the summer was marked by two periods of severe 
drought, the dry condition being especially felt during the latter 
part of August. In most respects 1909 was considered normal. 
By comparing the daily fluctuations of temperature with the various 
records showing the behavior of the codling moth it will be found 
— ee 
