542 



J. H. Fleming 



infrequently they are driven ashore on the east side of the 

 bay in this manner and quickly freeze." 



It is unlikely that weather conditions that have never arisen 

 before should continue regularly for a period of years, but it 

 is quite possible that an increase in the severity of the usual 

 conditions could arise and produce the cause giving rise to the 

 migrations. 



It is possible that what has usually been regarded as the 

 normal migration of Brünnich's Murre previous to the years 

 dealt with in this paper is really a migration arising in a less 

 degree from the same cause, and that normally the Murres do 

 not migrate far from their breeding limit. 



(1) Atkinson, Geo. E. 



KEFEBEXCES. 



On the Occurrence of Uria lomvia on Lake 

 Ontario. ''Biological Review of Ontario," 

 Vol. I., No. 1, January, 1894, pp. 2-5. 



(2) Brown, Hubert 



(3 

 (4 

 (5 

 (6 

 (7 

 (B 



(9 

 (10 



(H 

 (12 



(13 

 (14 



(15 

 (16 

 (17 



(18 

 (11) 

 (20 



(21 

 (22 



Ave rill, C. K., Jun 

 Dionne, C. E. 

 Meli wraith, Thomas 

 Treat, Willard E... 

 Johnson, Wm. S. .. 

 Eraser, Donald 

 Savage, James 

 Barrows, Walter B 

 Johnson, Wm. S, 

 Wintle, Ernest D. 

 Morris, Robert 0. 

 Butler, A. W. 

 Butler, A. W. 

 Wittaker, Wm. L. 

 Chapman, F. M. ... 

 Coues, Elliott 

 Reed, J. Harris ... 

 Pearson, T. Gilbert 

 Bartsch, Paul 

 Wood, X. A. 



On the Occurrence of Uria lomvia on Lake 



Ontario. Ibid, pp. 6-9. 

 " Auk," Vol. VIIL, 1891, pp. 307-8. 

 Ibid, Vol. XL, 1894, p. 175. 

 " Birds of Ontario," 1894, pp. 38-39. 

 "Auk," Vol. XII, 1895, p. 177. 

 Ibid. 



Ibid, p. 290. 

 Ibid, p. 312. 

 Ibid, p. 387. 



" Xidologist," Vol. III., 1896, p 

 "Birds of Montreal," pp. 133-134. 

 " Auk," Vol. XIV., 1897, p. 100. 

 Ibid, pp. 197-9. 

 " Birds of Indiana 

 " Auk," Vol. XIV. 

 Ibid. 



Ibid, p. 203. 

 Ibid, p. 202. 

 Ibid, 



Ibid, pp. 312-3. 

 " Bulletin of the Michigan Ornithological 



Club," Vol. I., 1897, p. 10. 



60. 



1898, pp. 564-7. 

 1897, p. 202. 



