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Science, New Series, Vol. 30, No. 768, Sep. 17, 1909


Previous Issue: New Series, Vol. 30, No. 767, Sep. 10, 1909
Next Issue: New Series, Vol. 30, No. 769, Sep. 24, 1909


Front Matter (1 p.)
Professor Simon Newcomb as an Astronomer, pp. 353-357
G. W. Hill

Simon Newcomb, pp. 357-358
G. C. C.

The Annual Report of the United States Commissioner of Education for 1908, pp. 358-359
Edward C. Elliott

The Museum Exhibitions in Connection with the Hudson-Fulton Celebration, pp. 359-362
George F. Kunz

Scientific Notes and News, pp. 362-364
University and Educational News, pp. 364-365


Discussion and Correspondence
Genera without Species, pp. 365-367
J. A. Allen
The Hypothesis of ``Presence and Absence'' in Mendelian Inheritance, pp. 367-368
W. E. Ritter


Scientific Books
Papers from the Tortugas Laboratory, pp. 368-372
The Green Algœ of North America
Frank Shipley Collins
Handbook for Field Geologists
C. W. Hayes
Review author[s]: J. S. Kingsley; Bradley M. Davis; Alfred C. Lane


Scientific Journal, p. 372
Historical Graphics, pp. 372-373
Carl Barus


Special Articles
On the Occurrence of the Littoral Barnacle Chthamalus Stellatus (Poli) at Woods Hole, Mass, pp. 373-374
F. B. Sumner


The Seventh International Congress of Applied Chemistry, pp. 374-384
Chas. Baskerville

Previous Issue: New Series, Vol. 30, No. 767, Sep. 10, 1909
Next Issue: New Series, Vol. 30, No. 769, Sep. 24, 1909



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