PLATE XVII 
DAILY CHANGES IN BROOD NUMBERS 
IN POTHOLE NO. 335 
NUMBER OF BROODS 
a) 

DATE 6/15 6/18 6/23 6/268 7/3 T6 WIR iB W23 V28 8/2 B/7 B/I2 B/IT W222 
HEAVY HEAVY 
RAIN RAIN 
LEVEL FALLING 
