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number was swelled by the presence of both transients and summer so- 
journers. A decided northward impulse was observed during the next 
week. April 21 the first arrived at Richmond, Iowa; and April 26 at 
the following places: Polo, Il].; Des Moiues, Iowa; Iowa City, Iowa; 
Grand Junction, Iowa; and Hastings, Minn. April 27 the first was seen 
at Lanesboro, Minn.; April 28 at Lake Mills, Wis.; and April 30 at Red 
Wing and Elk River, Minn. On the same day the bulk arrived at 
Grand Junction, Iowa; Lanesboro, Minn.; and Manhattan, Kans. These 
movements show that the line of heaviest and earliest migration was 
along the Mississippi River. Thence it spread up the valleys of the 
rivers and streams tributary to it. Migration seemed to be at its 
height about the end of April. May 1 the first arrival was noted at 
Green Bay, Wis., and the balk arrived at Elk River, Minn. May 5 
Brown Thrashers were seen at Vermillion, Dak.; May 13 at Huron, 
Dak.; and May 21 at Oak Point, Manitoba. Only one note of its breed- 
ing was recorded. This was at Saint Louis, Mo., where young were 
found as early as May 30. At Manhattan, Kans, they were building 
May 9. 
In the fall of 1884 the following records were received of the southe 
ward movements of the Brown Thrasher: At Williamstown, Iowa, the 
bulk left August 18, and the last August 29; at Unadilla, Nebr., the last 
was seen August 23; at Des Moines, Iowa, September 17. The bulk 
left Mount Carmel, Mo., September 20, and the last September 26. The 
first reached Gainesville, Tex., September 26. 
In the spring of 1885 no notes were contributed on its movements 
until it reached southern Illinois. It arrived at Shawneetown Mareh 
27. At Saint Louis, Mo., the first came April 2, two days earlier than 
it was reported at Paris, Ill., to which place it was carried by a tre- 
mendous bird wave, which reached there the afternoon and evening of 
April 4, To the westward of Saint Louis the birds waited for the next 
warm wave, reaching Glasgow, in north central Missouri, April 6. In 
the Ozark Hills, in southwestern Missouri, they were reported as arriv- 
ing at Pierce City and Reeds April 4. Still farther west, in east central 
Kansas (at Richmond and Manhattan), they did not put in an appear- 
ance until April 15. The only station in the vicinity of the Mississippi 
River at which they were reported between latitude 39° and latitude 
41° was Griggsville, lll., where they were scen April 11. As this date 
and locality coincided with the maximum of a warm wave, it may be 
supposed that this wave carried the van to latitude 40°. 
The next movement was quite regular. It began at Ferry and Mount 
Pleasant, Iowa, April 19; the next day extended to Iowa City, Iowa, 
and crossed the river to Aledo, Tampico, and Hennepin, LL; while the 
third day a great rush brought the birds to Des Moines, Coralville, Grin- 
nell, and Newton, Iowa, Rockford, Ill., and Lanesboro and Lake City, 
Minn. This was one of the most pronounced movements of the whole 
season of migration, and it was carried still farther forward on April 22 
