174 REPORT UNITED STATES ENTOMOLOGICAL COMMISSION. 



July 8. — Swarms returning, moving generally a little east of south. Movement re- 

 ported at forty-six points between Otter Tail and Todd Counties on the north ; Sher- 

 burne, Carver, Scott, and Waseca Counties on the east, and Freeborn, Jackson, Nobles, 

 and Rock Counties on the south. 



July 9 and 10. — Nearly a repetition of July 8, except that the direction changed 

 more to southwest, the wind changing to southerly on the latter date in many places. 



July 11 and 12. — Movement reversed again; flying northwest in abundance on the 

 11th and in still greater number on the 12th. Movement extended from Detroit, 

 Becker County, to Sioux City, on the west. 



July 13.— Weather generally unfavorable for observation ; flying northeast at a few 

 points. 



July 14.— Ditto. 



July 15. — Change of wind ; flying southeast ina few places. 



July 17. — ^Wind generally northwest ; flying southeast in a few places. 



July 18 and 19. — Wind northwest, generally cool and cloudy, and very few observed. 



July 20. — Grand movement; swarms observed at fifty-six points, flying southeast, 

 south and southwest; swarms represented in most cases as extremely large, flying very 

 high ; moving from 9 a. m. to 6 p. m. at Winnebago City, and until sundown at Marsh- 

 field ; seen at various places from Audubon to Sioux Falls on the west, from Saint 

 Cloud to Albert Lea on the east, and at Carroll City, Iowa, on the southwest. 



July 21. — ^Nearly the same, but flying in fewer numbers. Seen at Morristown at 8 

 a. m. 



July 22. — Change of wind to southerly ; flying northwest in great numbers at Audu- 

 bon, Detroit, Moorhead, Marshall, and Worthington. 



July 23. — Wind southerly ; no heavy flights reported except at Worthington, where 

 they flew very high until late. 



July 24. — Wind southerly ; few reported. 



July. — The wind southerly ; flying north very thick over Hector, in Renville County. 



July 26. — Wind southerly ;. few or none reported. 



July 27. — Wind changing to northwest; flying at Detroit, in large numbers, a little 

 south of east. 



July 28. — Another heavy movement to east and south ; reported as moving east at 

 Sioux City, southeast over Rock, Nobles, and Jackson Counties, south at Mountain 

 Lake, southeast over points in Todd and Stearns Counties, and nearly south at Audu- 

 bon and Crookston. 



July 29. — Change of wind ; seen flying northwest over Freeborn, Winnebago City, 

 Ivasota, Le Sueur Centre, Saint Wendall, and Paynesville (Stearns County), Benson 

 (could be seen till almost sundown), Lac-qui-i3arle, Moorhead, Audubon, and Crooks- 

 ton ; and probably further reports will add many other points where northeasterly 

 movements were seen. 



Very few reports have been received since July 30, but they show that a change of 

 wind on July 31 and August 1, to northwest, brought the great flight of August 2 to 

 the southeast. 



The alighting between July 3 and 6 has been already noticed ; as for any that has 

 occurred extensively since then it is hard to find. On the 8th, 9th, and 10th there was 

 quite a number of places here and there where considerable numbers dropped ; since 

 then it has been very light and scattering, and the numbers alighting are very insig- 

 nificant compared with those that pass along. 



To sum up, July 1, the air was thick with locusts over a considerable portion of the 

 State. July 3 to 6, they moved across the State to the northwest, and turning at Mor- 

 ris and westward ; on July 8 to 10 crossed the State to the southeast; July 11 and 12, 

 crossed the State to the northwest ; July 20 and 21, after the wind had been blowing 

 from the northwest for four days, they crossed the State again to the southeast (and 

 after some return movements to the northwest at various points for a week) ; July 28, 

 crossed the southwestern corner of the State, again to southeast, and after some fljiug 

 to northwest ; August 2, again crossed the State to the southeast in full force. 



