142 



PROCEEDINGS OF THE ACADEMY OF 



[April, 



1904- 



Mar. I 



Kam — — 



The early warm wave in 1904 occurred February 22-24, but brought 

 only the first arrival of Robins, with no evidence of migration in other 

 species. The rain which prevailed at the time no doubt checked any 

 general movement. The weather during March was normal and the 

 rises in temperature, which culminated on March 3, 7, 13, 20 and 26, 



1905 



FcLfS 



mar, ' 



Mar. IS- 



In 1905 there was no February migration. The rise in temperature 

 on March 8 brought the first migratory movement which was checked 

 by rain, but resumed again on March 11. High temperature :\Iarch 

 16-19 brought two migratory movements. Rain in April at the time 

 of sudden rises in temperature seems to have broken up the regularity 

 of the migration or held it in check, and perhaps had something to do 



