OCTOBER, 1902. 
THE MIGRATION OF HIRDS. 
211 
Appendix. 
For the method of observation see pages 198 and 199. The meteorological 
data, except those for Detroit, Ann Arbor, and Lake Forest, have been 
taken from the records at the Washburn Observatory at Madison. 
The temperature in each case is for 9:00 P. M., the direction of the wind 
for 2:00 and 9:00 P. M., stated for example West to Northwest— West at 
2:00 and Northwest at 9:00 P. M. When only one direction is given that 
was the direction for the entire day. 
