18 



flight is given, it is to the northwest. No eggs were known to be 

 deposited there. At Lower Brule Agency, on the 29th of July, an 

 immense swarm alighted from a westerly direction, and flew again 

 to the northwest, after remaining Ave days. At different times 

 during the month of August, small swarms, coming from a westerly 

 direction, alighted and died there. No eggs deposited. At Yank- 

 ton, the course was generally south, through the flying-season. 



It is probable that both in 1874 and 1876 the swarms that came 

 into this state, at least in the earlier part of the season, were 

 hatched in or near British America. This is to be inferred from 

 the direction of their coming, the fact that we know of extensive 

 hatching-grounds in British America in both these years, and that 

 we know of no nearer hatching-ground. There is here also a 

 failure to connect Minnesota with any known breeding-place by 

 any continuous observations. But it is known at least that at 

 Bismarck swarms passed south at various times during July. At 

 Jamestown, (on the N. P. Ry., east of Bismarck,) a large swarm 

 coming from the northwest on the 12th of July, dropped and 

 remained until the 24th when they left, going south. On the 14th 

 of August a very large swarm passed over southward without alight- 

 ing. At Worthington, D. T., (still farther east, on the Northern 

 Pacific Railroad,) the first flight appeared from the south on 

 the 25th of June, stayed about 24 hours and on a change of wind 

 went south. For the next six weeks locusts passed over that 

 station in various directions. 



At Fort Totten, "in the summer of 1875, grasshoppers hatched in the 

 vicinity of the post, took winy; in June, and left in the beginning of July. 

 In 1876, there was no hatching, but they came and dt-parted without doing 

 material damage. They always go and come with the wind. They came 

 about the middle of July, and left in about four duys; came again two weeks 

 afterwards and left without depositing any eggs. Swarms generally came 

 from the northwest. They often pass over in large numbers without doing 

 damage." 



L. C. Hunt, 

 Lhut, Col. 20th Inf. 



ENTRANCE OF INVADING SWARMS. 



The rate at which swarms have been pouring into the state du- 

 ring the summer, may be judged from notes taken at points along 

 the western line of the state of Minnesota, and from the eastern 

 tier of counties in Dakota. I give them in regular succession, 

 from Pembina south ward: 



