406 
JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 11 
RECORD OF EGGS DEPOSITED BY ONE FEMALE P. CORPORIS IN WRISTLET 
1918 
Date 
Time of Examination 
Hours Since Last Examination 
Number of Eggs 
V-18 
9.00 a. m. 
16 
5 
19 
12.30 p. m. 
271 
13 
20 
9.30 a. m. 
21 
11 
21 
9.00 a. m. 
231 
13 
22 
9.00 a. m. 
24 
13 
23 
9.00 a. m. 
24 
13 
24 
9.00 a. m. 
24 
13 
25 
9.00 a. m. 
24 
14 
26 
10.00 a. m. 
25 
13 
27 
9.30 a. m. 
231 
14 
28 
9.00 a. m. 
231 
13 
29 
9.30 a. m. 
241 
14 
30 
9.00 a. m. 
231 
12 
31 
9.00 a. m. 
24 
11 
VI- 1 
9.00 a. m. 
24 
13 
2 
10.30 a. m. 
251 
12 
3 
9.00 a. m. 
221 
11 
4 
9.00 a. m. 
24 
11 
5 
9.00 a. m. 
24 
12 
6 
9.00 a. m. 
24 
9 
7 
9.30 a. m. 
241 
12 
8 
10.00 a. m. 
241 
9 
9 
9.00 a. m. 
23 
8 
10 
9.00 a. m. 
24 
6 
11 
10.00 a. m. 
25 
1 
Both the male and female were found dead on the morning of June 
11. This record shows a total of 276 eggs deposited during a period of 
25 days,—an average of 11 eggs per day and a maximum of 14 eggs in 
24 hours. Of records previously published the one nearest approaching 
this is given by Nuttall, in which he obtained 272 eggs in 29 days, 
averaging 9.7 per day. 
COOPERATION AMONG AGRICULTURAL WORKERS 
By John J. Davis, Lafayette , Indiana 
In his address before the Entomological Society of America at Phil¬ 
adelphia, Pa., December 30, 1914, on the Ecological Foundation of 
Applied Entomology, 1 Dr. S. A. Forbes said, “It is when we search for 
specific reasons for our successes here and our failures there that we are 
driven to a scrutiny and analysis of controlling conditions of every 
description, and so find ourselves involved in studies so far outside 
entomology, commonly so-called, that we are obliged to apply for 
assistance to the physiologist, and the chemist, and the physicist, and 
the meteorologist, and the geographer, and the agriculturist, and the 
animal husbandman, and the bacteriologist, and the physician, and 
the sanitarian, or in a word, to the ecologist, who from the nature of 
his studies, must, if he is thoroughly to cover his field, be something of 
each and all of these, and still something more.” This thought so 
1 In Annals Ent. Soc. Amer., vol. 7, No. 1, Mar., 1915. 
