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Science, New Series, Vol. 15, No. 390, Jun. 20, 1902


Previous Issue: New Series, Vol. 15, No. 389, Jun. 13, 1902
Next Issue: New Series, Vol. 15, No. 391, Jun. 27, 1902


Front Matter (1 p.)
Measurement and Calculation, pp. 961-971
R. S. Woodward

"Natural History," "Œcology" or "Ethology"?, pp. 971-976
William Morton Wheeler

The Law of Von Baer, pp. 976-982
Otto C. Glaser

Membership of the American Association, pp. 982-984


Scientific Books
----------------, pp. 984-988
La géométrie Non-Euclidienne
P. Barbarin
Review author[s]: George Bruce Halsted
----------------, pp. 988-989
Lamarck, The Founder of Evolution, His Life and Work, with Translations of His Writings on Organic Evolution
Alpheus S. Packard
Review author[s]: William A. Locy


Societies and Academies, pp. 989-991


Discussion and Correspondence
What Is Nature Study?, pp. 991-992
W. J. Beal
Œcology, p. 993
F. A. Bather
Mass and Weight, pp. 993-994
Carl Hering


Shorter Articles
Divergence of Long Plumb-Lines at the Tamarack Mine, pp. 994-996
F. W. McNair
Sex in Seed Plants, p. 996
Francis Ramaley


Harvard College Observatory Astronomical Bulletin, pp. 996-997
Edward C. Pickering

A Graduate School of Agriculture, p. 997
Scientific Appointments under the Government, pp. 997-998
The Pittsburgh Meeting of the American Association, p. 998
George A. Wardlaw

Scientific Notes and News, pp. 998-999
University and Educational News, pp. 999-1000

Previous Issue: New Series, Vol. 15, No. 389, Jun. 13, 1902
Next Issue: New Series, Vol. 15, No. 391, Jun. 27, 1902



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