No. 429.] RELATION OF WIND TO BIRD MIGRATION. 743 
III) that the meteorological conditions on nearly all days were 
very unsettled in New England, and that although in a few 
cases the wind direction, for a time at least, was favorable 
for a migration of hawks near Boston, the adverse conditions 
in Connecticut stopped the migratory movement. 
TABLE III. 
UNITED STATES WEATHER BUREAU OBSERVATIONS AT 
BOSTON, MASS., 8 A.M., SEPTEMBER, 1895. 




Winn Winp VELOCITY, TEMPERATURE 
DATE, 1895. WEATHER. Dore dro. MILES PER "HANGE IN Past 
Hours, 
Sept. 7 Cloudy. N. 13 +3 
ee Cloudy. N.W 14 —I 
ainat Cloudy. N.W 3 +1 
eee Cloudy. N.W 5 —2 
“. 46 Cloudy. S.W. 12 t3 
“o I Cloudy. N. 8 +4 
EE ae Partly cloudy. W. 12 +6 
uir i Clear. N, 2 —I 
mo Clear W.: 7 +2 
eee Clear N. 3 —2 
To Cloudy W. 12 3 
" Clear N. j —1O 
cm) Clear. E. 18 +2 





In Table II, as well as in Table III, the directions and veloci- 
ties of the winds were taken from the local U. S. Weather 
Bureau records. 
There is a slight discrepancy between some of these obser- 
vations and those taken by the author and given previous to 
Table II. These differences are due to variations in the direc- 
tion of the wind on certain days. For example, part of the 
morning of September 28, Table II, the wind direction was 
S.E. and light, while at the time of the U.S. Bureau observa- 
tion it was N., 9 miles. The table on the following page 
shows the days of September, 1895, when flights of hawks 
occurred. 
