A HOPPERDOZER 
7 
in a given measure was made and it indicated that over thirty 
thousand grasshoppers were killed in each bushel caught. A 
large part of them were very small hoppers and only a few, at 
that time, July nth, had developed wings. Many alfalfa worms 
were caught when the dozer was run over standing alfalfa. The 
field has since been comparatively free from hoppers and no ap¬ 
parent injury was made on the adjoining crops. 
About ten days later the dozer was used on the field of Mr. 
J. B. B A yan. The hoppers had then developed wings so that many 
were able to fly too far, thus preventing a very successful catch, 
although several bushels of grasshoppers were killed on about two 
acres of alfalfa. Other farmers used the dozer and several other 
dozers of similar construction were built and used in the vicin¬ 
ity of Rocky Ford. In fields where the grasshoppers were unusually 
numerous, satisfactory results were made, yet it was evident in the 
experience of all that the dozer could be most effectually used 
early while the hoppers were small and could not fly, and espec¬ 
ially where the dozer was driven rapidy over standing alfalfa from 
8 inches to 12 inches high; although it was demonstrated that 
large full grown grasshoppers could be caught and killed in the 
same manner early in the morning after a shower or heavy dew 
when the hoppers would be wet and numb from cold and too 
stupid to fly. 
Early one morning in August, after an evening shower, the 
writer observed that a piece of alfalfa was literally yellow with 
grasshoppers that had climbed to the top of the stems to catch the 
warmth of the first rays of the morning sun. A horse was immedi¬ 
ately hitched to the dozer, and coal oil not being handy the pan 
was filled with cold water onlv from a ditch near bv and the 
j j 
horse driven at a trot through the standing hay which was about 
12 inches high. It was 40 rods across the field and back and by 
that time the pan was full of grasshoppers struggling in the water. 
These were immediately skimmed out with a screen and thrown 
into a milk can and the cover put on. After the second trip the 
can was more than full of grasshoppers pressed in tight. As there 
was no oil on the grasshoppers the can was carried to the yard 
where a flock of young chickens and turkeys fairly covered the 
can after it had been turned on one side, with the cover off, and 
they had discovered what it contained. The following morning be¬ 
ing wet and cold, we took an early start and in less than a half hour 
we had killed over four bushels of large grasshoppers on less than 
two acres; this time we used coal oil, as many hoppers seemed to 
escape when only water was used. 
The amount of oil required, will not exceed a gallon to the 
