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Science, Vol. 16, No. 404, Oct. 31, 1890


Previous Issue: Vol. 16, No. 403, Oct. 24, 1890
Next Issue: Vol. 16, No. 405, Nov. 7, 1890


Front Matter (2 pp.)
The Aim and Future of Natural Science, pp. 239-244
The Secor System of Marine Propulsion, pp. 244-245
Notes and News, p. 245
[Editorial Notes], p. 246


Letters to the Editor
Fluctuations of Air-Pressure, pp. 246-247
H. A. Hazen
Origin of Right or Left Handedness, pp. 247-248
J. Mark Baldwin
Deaf-Mutes, pp. 248-249
Philip G. Gillett
Chalk from the Niobrara Cretaceous of Kansas, p. 249
S. W. Williston


Among the Publishers, pp. 249-252
Back Matter (1 p.)

Previous Issue: Vol. 16, No. 403, Oct. 24, 1890
Next Issue: Vol. 16, No. 405, Nov. 7, 1890



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