OCTOBER, 1902. 
THE MIGRATION OK BIRDS. 
in 2.8 — out 4.6 — Slow — Curved. 
in i.o — out 5.8 — Swift — Size i — . 
in 8.3 — out 7.0 — Swift — Size 2 — . 
in 2.0 — out 4.6 — Flight like goldfinch. 
in 2.0 — out 5.8 — Same as preceding one. 
in 6.0 — out 7.8. 
in 8.7 — out 6.8. 
in 1.5 — out 5.2 — Size i — . Very tiny. 
in I.I— out 5.5. 
in 8.3 — out 6.7 — Out of focus. 
in 1.6 — out 5.8 — Out of focus. 
in 1.6 — out 6.6 — Out of focus. 
in 1.0 — out 5.2 — Slow — Total 21. 
1 :45 to 2 :oo — in 8.4 — out 7.8. 
in 1.8 — out 0.0 i c 
^ - ? Same species, 
ni 1.0 — out 5.6 I ^ 
in 2.8 — out 4.6. 
in 2.0 — out 4.6. 
in 2.7 — out 4.0 — Swift. 
in 3.5 — out 2.0. 
in 8.2 — out 6.9 — Size 2. 
in 1.0 — out 5.3. 
in 8.3 — out 6.0 — Swift — Size i-|-. 
in 2.8 — out 4.3. 
in 5.0 — out 8.0 — Slow — Size 3. 
in 1.8 — out 5.2. 
in 2.2 — out 4.8 ^ Swift — Succeeding each other 
in ... — out ... closely, 
in ... — out ... 1 In field at same time. 
Clouds at 1 :45 obscured 
the moon ; moon low in 
southwest — Total 16. 
Beloit, Wis., May 12, 1900. 
Meteorological Data. 
Wind — Southwest, velocity 12. 
Temperature — 70. 8°. 
Atmosphere — Clear. 
Total number of birds observed from 8 :oo P. M. to 3 125 
A. M.— 363. 
8:00 to 8:15 — in 3.1 — out 8.5. 
in 3.7 — out 7.9. 
