INFLUENCE OF PRECIPITATION ON cilixcil BTH 
J9 
area seriously ravaged is indicated thus #, showing thai the ruin 
came too late in such a section to ward off an outbreak of the pest 
According to t he Weather Bureau reports also, the distribution of 
rain in May, ls ( .»7. differed materially Prom that of the same month 
of L896 in that in L897 the major portion of the rain fell prior to 
the L5th, the remainder of the month being rather dry. the only 
general precipitation occurring on the 23d and 24th, with a much 
Pio.13.- Map showing distribution of chinch bug in Ohio in 1894. (Author's illustration.) 
lighter rain on the 28th. But here again the amount was insufficient 
to ward off serious injury, as is indicated by map (fig. L2), the same 
symbols being \\-^\ here as before. In this case it was probably the 
latter portion of the brood that survived, as a personal inspection 
of the country early in the month failed to reveal the presence of 
young hm!--. though they were certainly present in abundance at a 
corresponding period of the preceding year. 
