104 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 
TABLE XXXIX.—Band records taken from ten apple trees during 1908. 
Humbe of 
Number emergin 
No. of Date! of larvee moths. 
record. i and 
B- pups 
1908. 1909. 
1| July 18 84 66 1 
2| July 25 77 69 1 
3 | Aug. 1 121 87 13 
4} Aug. 8 90 25 27 
5 | Aug. 14 54 4 33 
6 | Aug. 22 52 1 38 
7 | Aug. 29 ZO eae 14 
8 | Sept. 5 Di \isseekeer 25 
9 | Sept. 12 LOZ See saee 43 
10 | Sept. 19 MOS ieee ree 92 
11 | Sept. 27 1O1G| Reeves 56 
12°} Oct. 3 Ae Wee ee eee 26 
ISh\Oetent2 Borie ae 50 
14| Oct. 18 PAS) eee 20 
15 | Oct. 26 a (0) ee 7 
16| Nov. 2 Gila oneree 2 
17| Nov. 9 PAS aes 1 
993 252 449 
TaBLE XL.—Band records of 1908. Summary of Table XX XIX. 
Larve from band collections. i ae 
Transforming larve of band collections.......-.. 35.9 
Wintering larve 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 
