No. 3.] DAWSON — THE LOCUST INVASION. 129 



Strange to say the grasshoppers have been in myriads from 

 Carleton to the boundary of this timber, but none on any 

 occasion have ever passed it, or troubled the farmers of Prince 

 Albert. 



Prince Albert, North West Territory .— (Philip Turner). No 

 grasshoppers appeared here. 



Missouri Coteau, North West Territory.— Long. 105° 30',lat. 

 49° 30'. On June 19th, 1874, I passed over about twenty miles 

 of country near the western edge of the Tertiary Plateau, which 

 was covered with young grasshoppers, not yet able to fly. 



Fort QiCAppelle, North West Territory.— (Wm. J. McLean.) 

 Produced from the egg, hatching from early in May to the 

 beginning of July. On July 25th began to take flight, going 

 south-east by south. Foreign swarms were first observed about 

 July 20th coming from north-west, and north-west by-uorth. 

 Continued passing for ten or twelve days, and remained on 

 the ground only while contrary winds lasted. All were gone 

 early in August, and no eggs were deposited. 



Crops totally destroyed before the insects began to fly. 

 Mr. McLean observes, that the insects before they were able 

 to fly, took certain directions for several days at a time, 

 and all travelled simultaneously in the same direction. 



In 1875 full grown insects appeared June 17th in myriads. 

 Seemed to come from about the same direction in which 

 they flew from here last year, but rather more southerly. 



Wood End, North West Territory.— Long. 103°, lat. 49°. 

 Dr. Burgess on July 1st and 2nd noted grasshoppers flying 

 westward with the wind. They are said to have been very 

 numerous. (The wind at Wood Mt., 150 miles further west, 

 was variable on these days, changing from south-east on the 

 first, to east-north-east, south and north-north-east on the second.) 

 The observed direction of flight is abnormal. 



Cumberland House, North West Territory. — (H. Belanger.) 

 Grasshoppers never known to appear here in swarms. 



Fort Ellice, North West Territory. — (R. McDonald.) Not 

 produced from the egg here. Arrived in swarms July 14th, 

 from the south-west. Left July 17th, after devouring all the 

 crops, going north-east. Eggs were deposited and some were 



