14 
constantly. The two prevailing species were the Caloptenus spretus and the Calop- 
tenus atlanis. The former species was the most numerous, the ratio heing ahout 
4 to 1. Other species existed, hut as they were found hut sparingly no attempt was 
made to enumerate them. 
As was to he supposed, the hatching was confined entirely to the stuhhle fields. 
From these the young insects moved forward onto the adjacent wheat fields, and at 
the time of my first visit a narrow strip of grain along a few of the fields had heen 
destroyed. The usual methods of extermination were resorted to, i. e., the plowing 
of the adjacent stubble fields and the use of hopper-dozers along the edges of the 
infested fields. 
The Great Northern Eailway immediately plowed all of its lands in which the 
grasshoppers were hatching, and, so far as it was possible, most of the farmers did 
the same. The beneficial effect of the plowing was very marked even after the proc- 
ess of hatching was well advanced. 
The work of the coal-tar and kerosene hopper-dozers was also very effective, each 
pan catching from 5 to 8 bushels per day. The canvas traps, such as were reported 
as giving more or less satisfactory results elsewhere, were abandoned after the first 
one or two trials. When canvas traps are used the grasshoppers have to be caught 
twice, and the second operation — that of securing them after they have jumped into 
the bag — is the more difficult one; so difficult, in fact, as to border on the impossible. 
While working at Orr reports came in from the adjoining regions, showing that 
the infested region reached as far north as the center of Walsh County, nearly as 
far south as Larimore, and occupied a region some 10 miles wide. The grasshoppers 
did not cover the entire region, but were found in patches here and there, more 
noticeably in the vicinity of Park Eiver, Conway, and Inkster, with a few at 
McCanna and Niagara. They were also found through the central part of Nelson 
County, though not in destructive numbers. 
Grasshoppers were also found to some extent in the western part of Ramsey 
County, at a place called Church's Ferry, and north from there 18 miles, at Cando. 
In all of the places mentioned the Rocky Mountain Locust was the prevailing kind. A 
few of this species, associated with many others, chiefly the Caloptenus bivittatus, were 
found at Clifford, in the western part of Trail County. The Rocky Mountain Locust 
was also reported from the central part of Ransom County, but as they were few in 
number the locality was not visited. The work of extermination was carried on in 
all parts of the State in which the grasshoppers appeared in sufficient numbers. 
While the damage to this year's crop would not have been great in any event, yet 
the warfare in many localities has no doubt resulted in a larger crop than would 
otherwise have been harvested. 
Our chief concern is for the coming year. I shall stay in the infested localities 
for the remainder of the season, carefully noting in what regions, if any, the eggs 
are laid, so that we may carry on the work of future extermination intelligently 
and thoroughly. 
C. B. Waldron. 
Mr. Lawrence Bruner, 
Lincoln, iVe&r, 
I add still further matter in reference to this outbreak of locusts in 
Korth Dakota in the shape of a special bulletin, which was issued from 
the Agricultural Experiment Station of that State early in July. This 
bulletin was prepared conjointly by the Director, Dr. H. E. Stockbridge, 
and Prof. C. B. Waldron, whose report is already given. This special 
bulletin is not large, hence will be copied in full, 
