240 
THOMPSON YATES LABORATORIES REPORT 
July 1 3 One female found dead on the Re-fed on blood ; abdomen swelling. 
Laid more eggs. Was re-fed on blood. 
18 
20 
21 
23 
25 
27 
29 
One female found dead on the 
surface of the water with 
developed ova and empty 
spermatheca. Others re- 
fed on blood. 
One female dead on water ; 
contained developed ova. 
Other two females re-fed. 
Re-fed ; no ova laid. 
Re-fed : no ova laid. 
Added eight males to this cage. 
One of the two females had 
died ; contained ova with 
transparent cuticle ; empty 
spermatheca. 
The remaining female died. 
Re-fed. 
Re-fed ; more eggs had been laid. 
None of the previous eggs had 
hatched. 
Added four males to this cage. 
Six eggs laid. Re-fed on blood. 
Re-fed. Abdomen again swelling. 
Few eggs laid. Re-fed on blood. 
Found struggling on the surface of the 
water ; had lost one leg ; was 
killed. Ovaries contained thirty- 
three developed ova with chiti- 
nous covering ; empty spermatheca. 
None of the eggs laid hatched out. 
This experiment was repeated in a small cage entirely. 
Experiment IX 
June 26 Ten females [Anopheles) hatched out from pupae, were fed 
on blood and introduced with a number of hatched-out 
males, into a small cage with banana and water. 
,, 28 Eight of the females were re-fed on blood; four males caught 
in the native town were added. 
„ 30 Eight again re-fed ; three more town males introduced ; 
abdomen beginning to swell. 
Re-fed eight females. 
Re-fed seven females ; two males found dead on water ; eggs 
laid. 
Eggs of yesterday hatched out. 
July 
