IRRIGATION IN FLORIDA. 
lines represent the total rainfall during these periods, up to 4 inches. 
Many 10-day periods had more than 4 inches of rainfall, but the 
charts were made to show periods of rainfall rather than down- 
pours. In general, the rainy years show a preponderance of black 
spaces and the dry years a preponderance of white spaces. 
RuqA Sept. 
Oof. u 
CJov. 
D&G. 
xlan. 
Fe-b\Mar. Apr. 
Mau 
June. 
July 
1&9Z~? 
J 
9?"4 
^"^Sfp 
lfoo«oim. 
ci"Z HSfc 
U Hi 
oz"?m- 
O?"* 
o^C 
m- 
— 
— 
zr 
- 
ER.z. 
Fig. 2. — Chart showing rainfall of 4 inches or less for each 10-day period, 1892-1914, 
at Pensacola, Fla. 
The Hypoluxo chart (fig. 1) shows heavy rainfall in the sum- 
mer months although that district is liable to long and severe droughts. 
Many of the black spaces in this chart represent considerably more 
Note. — Although the rainfall charts do not indicate each shower the cumulative rain- 
fall for each 10-day period totalling less than 4 inches can be read to within one-fifth of 
an inch; for example, see the Pensacola chart (fig. 2). The month of September, 1893, 
shows 1.8 inches rainfall the first 10 clays ; 1.0-inch the second 10-day period ; and 1.2 
inches the last period, or a total of 3 inches for the month. It will be seen that no rain 
fell in November of the same year and 4 inches or more fell in the first 10 days of Feb- 
ruary, 1894. 
