12 
which would have normally taken place in the part of the affluent 
now covered by the pond'and not now producing. 
Larvae were observed away from the bank in Cedar Creek on 
leaves and small trash floating in the water. This was on June 18. 
Two days before there had been a heavy rain on the upper part of 
this creek, which is very large and long, and both above backwater 
and for nearly a mile below its head, larvae of all sizes were found 
on this floatage, adrift in the stream, against the bank, or adhering to 
branches of trees that dipped down into it. The lower part of the 
backwater of the creek and the bayou below it were free from this 
floatage, and although careful search was made, only a very few 
larvae were found against the bank in the former and none in the 
latter. In the backwater they were fairly abundant, especially high 
up, and because of the large area involved, comprised a large number. 
They were of all sizes. 
On June 24 another trip was made to this creek to observe prog¬ 
ress. It was practically bare of larvae below live water either on 
floatage adrift or on the banks; nor were any found in the bayou 
below, where we naturally expected them to have been washed out. 
Their disappearance was ascribed to fish control, as a large number 
of small fish were seen in this creek on both visits—although on 
account of its depth and steep banks it is not a favorable place for 
minnows. Leaf floatage was not common on the affluents of this 
pond in June, except on Cedar and Waxahatchie Creeks, which are 
very long streams. 
As Cedar Creek was a surprise to us in one way, so Slaughter 
Creek Bayou was in another. The shore around a part of this bayou 
was apparently an ideal place for producing mosquitoes, as it was 
marshy, with a number of small pools—cow tracks mainly—some 
covered by grass and some exposed to the sun. This was examined 
twice in June (14-15 and 21). On June 14 and 15 a few small Ano¬ 
pheles larvae were found—too small to develop. Seven days later— 
when they should have been good sized—a careful search showed 
practically none. Many of these pools contained water boatmen, 
but not all of them. Possibly these small pools were too hot—the 
temperature of the water is recorded June 21, 9 a. m., as 86° F.; 
10.30, as 92° F.; 1 p. m., as 96° and 98° F. The thermometer was 
shaded (with two hats) from the direct rays of the sun. It was a 
common bath thermometer and only approximately correct. This 
place was barren of larvae at the survey on August 22 and 28, but 
a few larvae were found in the bayou offshore in water 8 to 12 inches 
deep, where live grass hung over into the water. They were not 
enough to be of any sanitary importance. Xone was found in the 
dead grass. There was quite a number of Culex larvae seen at both 
examinations. 
