32 The Control of Mosquitoes 



rainy days that occur each year, and particularly 

 during certain months. At Panama from July to 



Table No. S.—ifmlhly mtUorohgital data—Anem, Cmat Zone, year 19U. ' 



1 Elevation of barometer D2 feet above S€a leveL 

 9 Average for 14 years' record. 

 > Tenths ot sky. 



•April. 



• February. 



• June. 



November, 1912, inclusive, twenty or more rainy 

 days occurred each month. At Culebra, from nine- 

 teen to twenty-four, and at Colon from twenty 



