13 
were killed before and after hatching. This wheat, at 3Q btushelfl to the 
acre, an average yield for the twelve counties where the locust plague 
occurred, would be worth about $400,000. The actual outlay in money 
by the authorities, State and county, for machinery and oil could not 
have been more than $1 for each $50 saved. Wewere told thai in tin- 
two States together there were over 200 " hopper-dozers n at work col- 
lecting and destroying the locusts. These machines were kepi going 
for fully two weeks, some of them longer, and each machine canghl 
from 4 to 11 bushels of the locusts per day. It is supposed that fully 
as many as 8,000 to 10,000 bushels were thus destroyed, many of them 
being quite small and hence counted for more. At any rate, the de- 
struction was great. An equal number were destroyed by plowing the 
eggs under prior to their hatching. These figures represent an actual 
present saving ; but what shall we say about the probable future sav- 
ing to the settlers of these two States and of those adjoining, had none 
of this work of destruction been carried on? With favoring conditions 
in climate and surroundings nearly all of our various species are capa- 
ble of increasing at the ratio of fifty-fold; i. e., each female will lay 
upwards of 100 eggs. About one-half of the young hatched from these 
eggs will be males and the other half females. Therefore, if twelve 
counties are overrun with these insects this year, and they all live to 
deposit eggs, with all favoring circumstances the result will be suffic- 
ient hoppers by the following year to overrun fifty times twelve coun- 
ties, or six hundred counties, a matter too formidable to think of. 
Since T have already reported to you the results of this trip through 
the Red River Valley, and alse spoken of it at the Washington meet- 
ing of the Association of Economic Entomologists, I will not enter 
farther into details here. Suffice it to say, that after going over the 
regions already indicated, I went west over the line of the Great North- 
ern Railroad to Helena, Mont., stopping oft' at convenient points along 
the road. At these places inquiries were made among the settlers con 
cnning locust abundance, besides goingout into the country and exam- 
ining for myself to make doubly sure that there were no migratory 
locusts in the entire country west of Devil's Lake in North Dakota. 
Only at several points in the mountains of Montana did I find these 
insects at all abundant, and there only over very limited areas where 
the Camnula pellucida occurred in the valleys, in hay fields. 
PROF. "WA I. Minx's REPORT. 
Fargo, N. Dak., lug. 6, 189L 
Dear Sir: [n compliance with your request, I submit t ho following report con- 
cerning the recent appearance of grasshoppers in North Dakota. 
The first report of grasshoppers came from Orr, a station in the northern part of 
Grand Forks County. The report was received July " 35, and on July 26 I went to 
the infested region and found a considerable number of grasshoppers, the oldest of 
which had been hatched two or three weeks before, while new ones wore appealing 
*This must he a mistake, and 1 think should read Ma\ 25 instead,— J* tf. 
