
Eh Wy gt 
pyvaerageulongeyity: for males: (days) o....6..l..ci..ccssccvevescsevers 15.1 
Maximum ¥ y z RP EU es hc Ate tu Woe teces HAT. tee 28.0 
Sveroce): PreovipOsi tion period witty, Payee ddecccalechiccis.d 3.27 
Maximum rs L tlie Jb ges <2 ane a die OR EE Ay 8.00 
Be memnOvI DOS ELON Periods (Moo) Si dciisccticilicced 8.8 
Maximum ML i At) nae sare aL PPT Lr LESO 
A. J. Chapman and L. W. Noble, reporting on migration studies of 
the pink bollworm, state: "A total of 233 moths have been taken from the 
migration screens during the month (October). The weekly catch has in- 
-creased from 9 for the first week to 80 for the last week. This is by 
far the greatest migration that has ever occurred at Presidio." 
F. F. Bondy, Florence, S. C., reports results of poison tests for 
control of the boll weevil (Anthonomus grandis Boh.). Seven series of 
tests were carried out. * * * The conclusions from these experiments are 
that (a) "All tests receiving calcium arsenate dust or in combination 
with molasses mixture gave good substantial gains;" (b) "All tests re- 
ceiving only molasses mixture or sodium fluosilicate gave practically no 
gains." 
INSECTS AFFECTING MAN AND ANIMALS 
"The latter half of September and most of October were devoted to 
studies of the tick situation in Louisiana," writes H. 0. Schroeder, 
Brownsville, Tex. "This investigation was prompted by the occurrence 
this summer of four cases of Rocky Mountain spotted fever, three of which 
were fatal, in the vicinity of Center Point, Avoyelles Parish, La. There 
was a clear history of tick bites in each of these cases. A rather com— 
plete epidemiological study was made of this outbreak. The lone star 
tick (Amblyomma americanum L.) and the cattle tick (Margaropus annulatus 
Say) are the two dominant species of tick at this time of the year. The 
former occurs in large numbers in localized areas in the larval and nyn- 
phal stages. "I have found considerable numbers of flat larvae on grass, 
underbrush, and low pines in the pine wocds. I have not found them in 
low lands wooded with oaks. They are probably as abundant or more so in 
the pine woods near the Reed home (where two fatal cases occurred) than 
anywhere else. * * * Several hundred ticks collected around Center 
were sent to Dr. R. R. Parker of the Spotted Fever Laboratory, U. S. Pub- 
lic Health Service, Hamilton, Mont., to be tested for infection. Dr. 
Parker reports that all these were negative with one exception, and this 
was not clear-cut positive infection." 
D. C. Parman, of the Coachella, Calif., sublaboratory, presents a 
Summary of the work done with parasites and predators of blowflies dur- 
ing the summer. He says: "Three general areas have been covered in this 
