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Science, New Series, Vol. 29, No. 736, Feb. 5, 1909


Previous Issue: New Series, Vol. 29, No. 735, Jan. 29, 1909
Next Issue: New Series, Vol. 29, No. 737, Feb. 12, 1909


Front Matter (1 p.)


The American Association for the Advancement of Science
The Study of Igneous Rocks, pp. 201-217
Joseph P. Iddings


Conduct of Scientific Work Under the United States Government, pp. 217-220
Recent Work of the Mount Wilson Solar Observatory, pp. 220-222
George E. Hale

Brooks Memorial, pp. 222-223
Scientific Notes and News, pp. 223-227
University and Educational News, p. 227


Discussion and Correspondence
The Law of Radiation, pp. 227-228
J. M. Schaeberle
American Scientific Productivity, pp. 228-229
J. McKeen Cattell


Scientific Books
----------------, pp. 229-230
Qualitative Analyse vom Standpunkte der Ionenlehre
Wilhelm Böttger
Review author[s]: E. Renouf
----------------, pp. 230-231
A Treatise on Chemistry
H. E. Roscoe; C. Schorlemmer
Review author[s]: Henry Fay
----------------, pp. 231-232
Lead and Zinc in the United States
Walter Renton Ingalls
Review author[s]: H. O. Hofman


Scientific Journals and Articles, p. 232
Botanical Notes, pp. 232-234
Charles E. Bessey


Special Articles
Sex Determination and Parthenogenesis in Phylloxerans and Aphids, pp. 234-237
T. H. Morgan
Momentum Effects in Electric Discharge, pp. 237-238
Francis E. Nipher


Societies and Academies, pp. 238-240

Previous Issue: New Series, Vol. 29, No. 735, Jan. 29, 1909
Next Issue: New Series, Vol. 29, No. 737, Feb. 12, 1909



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