OCTOBER, 1902. 
THE MIGRATION OF BIRDS 
251 
10:30 to 10:55- 
4.8 — out 1.4. 
4.6 — out 2.6. 
3.7— out 
4.1 — out 
3.7— out 
4.7 — out 
3.9— out 
2.6. 
1.4. 
2.2. 
2.4. 
1.4. 
n 4.7 — out 2.3. 
4.3— out 3.1. 
3.6 — out 2.6. 
4.1 — out 1.5. 
3.9— out 4.6.— 
4.5— out 2.5. 
3.3— out 1.5.— 
4.3— out 2.5.— 
1.4— out 3.3.— 
n 4.9 — out 1.6. — 
n 4.8 — out 3.7. — 
n 3.7 — out 2.8. — 
n 3.9 — out 3.2. — 
n 4.9 — out 2.2. — 
n 4.5— out 1.5.— 
-Size 2. 
-Size 
-Size 2. 
-Size 3. Total 26. 
-Medium. Size 3 
-Fast. Size 
-Medium. Size 2-| 
to be near. 
-Slow. Size 2. 
off. 
-Fast. Size 2 
-Slow. Size 2- 1 
-Fast. Size 2- 
Size 2- 
|-. Like a shot 
Size 2 
Size 2 
Size 2. 
Size I. 
Size I- 
Size 3. 
Appeared 
Appeared far 
Out of focus. 
Dimly seen. 
Fast. 
Size I- 
Slow. 
Slow. 
Slow. 
Fast. 
Fast. 
Slow, 
plain. 
Fast. Size i-]-. Apparently 
close by. 
Size 2. 
Size 2. Wing-strokes plain. 
Total 18. 
Dimly seen. 
Dimly seen. 
. Indistinct. 
Wing-strokes 
Detroit, Mich., May 13, 1900. 
Meteorological Data. 
Wind — Very light Southwest. 
Temperature — 70° at 8:00 P. M. — 66° at 12:00. 
Atmosphere — Fair. 
Total number of birds observed from 8:00 P. M. to 12:00 
P. M.— HI. 
8:15 to 8:30 — in 31^ — out 1/2. — Rapid. Size, small. 
in 3>^ — out i^. — Rapid. Size, small, 
in 3^ — out i^. — Rapid. Size, small, 
in 3^2 — out i^. — Rapid. Size, small, 
in 3^ — out i^. — Rapid. Size, small, 
in 3^ — out i^. — Rapid. Size, small, 
in 3^ — out 15^. — Rapid. Size, small. 
