OCTOBER, 1902. 
THE MIGRATION OF BIRDS. 
223 
12:^0 to 12 :45 — 
12:45 to I :oo — 
I :oo to I :i5 — 
as if to turn in his course. 
Total 14. 
n 4.8 — out 7.2 — Swift — Size 2-|-. 
n 7.8 — out 3.0 — Slow — Looked like duck. ■ 
n 3.0 — out .7.0. 
n 5.0 — out 7.2 — Seemed to appear suddenly 
near center of field, 
n 4.5 — out 8.5 — Size 3. 
n 2.0 — out 8.8 — Total 6. 
n 2.0 — out 8.8 — Total i. 
n 4.6 — out 7.9 — Out of focus, 
n 3.4 — out 1.9 — Swift — Out of focus, 
n 3.1 — out 8.9 — Out of focus — Sailing, 
in 5.6 — out 7.2 — Fast — Out of focus, 
n 2.9 — out 0.0 — Slow. 
n 3.2 — out 8.5 — Slow, wing-strokes visible — 
Out of focus, 
n 3.3 — out 1.9 — Slow, wing-strokes visible — 
Out of focus — Total 7. 
Madison, Wis., May 9, 1900. 
Meteorological Data. 
Wind — South to southwest, velocity 8. 
Temperature — 53. 9°. 
Atmosphere — Clear. 
Total number of birds observed from 7:50 P. M. to 11:45 
P. M.— 47. 
:oo — in 0.0 — out 0.0 — Total o. 
5.8 — out 3.8 — Out of focus. 
5.1 — out 1.6 — Slightly blurred — Total, 2. 
8:30 — in 0.0 — out 0.0 — Total o. 
8:45 — -in 8.9 — out 5.3 — Slow — Size 2 — Wing-strokes 
seen— Total i. 
5.0 — out 7.0 — Fast — Out of focus, obscured 
over 60 per cent of field, 
in 4.8 — out 7.1 — Size Slightly blurred — 
Total 2. 
9:00 to 9:15 — in 4.1 — out 7.7 — Fast. Out of focus. Strokes 
visible. 
2.2 — out 3.6. — Verv distinct. Total 2. 
-Size I. Wing-strokes visible. 
-Swift. Size 2 — Out of focus. 
Total 2. 
7:50 to 
8:00 to 
8:15 to 
8:30 to 
8:15- 
8:45 to 9:00- 
in 
in 
in 
9:15 to 
m 
9:30—111 8.4— out 7.3. 
in 3.3 — out 1.2. 
