100 The Rocky Mountain Locust. 



the warmer parts of the day, and wend their way as far 

 as the wind will permit toward their native home in the 

 Northwest. They mostly carry with them the germs of 

 disease or are parasitized, and wherever they settle do 

 comparatively little damage. 



DIRECTIONS IN WHICH THE YOUNG LOCUSTS TRAVEL. 



The young insects move, as a rule, during the warmer 

 hours of the day only, feeding, if hungry, by the way, but 

 generally marching in a given direction until toward 

 evening. They travel in schools or armies, in no particular 

 direction, but purely in search of food — the same school 

 one day often pursuing a different course from that 

 pursued the day previous. On this point the experience 

 of 1875 is conclusive, though the bulk of the testimony as 

 to their actions, when hatching out in the States to the 

 north and west, is to the effect that the prevailing direction 

 taken is south or southeast, while in Southern Texas it is 

 just opposite, or north. A person traveling along a road 

 may often see one army marching in one direction to the 

 left and another in the opposite direction to the right. 



RATE AT WHICH THE YOUNG TRAVEL. 



When about half grown they seldom move at a greater 

 rate than three yards a minute, even when at their greatest 

 speed over a tolerably smooth and level road, and not 

 halting to feed. They walk three-fourths this distance and 

 hop the rest. Two consecutive hops are seldom taken, and 

 any individual one may be run down and fatigued by 

 obliging it to hop ten or twelve times without a rest. 



THEY REACH BUT A FEW MILES EAST OF WHERE THEY 



HATCH. 



At the rate at which they travel, as just described, they 

 could not extend many miles, even if they continued to 



