APRIL, 1902. SOME RECENT OBSERVATIONS ON MIGRATION OF BIRDS. 101 
Number of birds seen from 8:15 to 8:30, 8. 
8:30 to 8:45, 7 
8:45 to 9:00, 10. 
9:00 to 9:15, 8. First hour, 33 
9:15 to 9:30, 9. 
9:30 to 9:45, 10. 
" 9:45 to 10:00, 14. 
" 10:00 to 10:15, 8. Second h'r. 41 
'* 10:15 to 10:30, 10. 
10:30 to 10:45, 6. 
^ 10:45 to II -OO' 4- 
11:00 to 11:15, 7. Third h'r., 27 
II :i5 to II :30, 4. 
II :30 to II :45, i- 
" 11-45 to 12:00, 5. 4th period, ic 
Total number seen from 8:15 to 12:00, in. 
DIRECTIONS OF FLIGHT. 
Number of birds traveling Northeast 74 
Number of birds traveling North-northeast 13 
Number of birds traveling East-northeast 11 
Number of birds traveling North 4 
Number of birds traveling North-northwest 5 
Number of birds traveling Northwest 3 
Number of birds traveling Southeast I 
SPEED. 
Number of birds traveling very rapidly 75 
Number of birds traveling moderately 22 
Number of birds traveling slowly 12 
Number of birds traveling very slowly 2 
RELATIVE SIZES OF BIRDS. 
Small (Goldfinch) 66 
Medium (Robin) 27 
Large (Crow) 15 
Very large 3 
