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Previous Issue: New Series, Vol. 69, No. 1792, May 3, 1929
Next Issue: New Series, Vol. 69, No. 1794, May 17, 1929
Front Matter (4 pp.)
Michelson's Economic Value, pp. 481-485
- Robert A. Millikan
Meteor Crater Exploration, pp. 485-487
- Herman L. Fairchild
Scientific Events
- Agricultural Research Bureaus in Great Britain, pp. 487-488
- U. S. Biological Survey, p. 488
- The National Arboretum, p. 488
- Gifts for Medical Research at New York University and Bellevue Hospital Medical College, p. 489
- Physical Laboratories of the University of Chicago, p. 489
- The Fiftieth Anniversary of the Incandescent Light and Mr. Edison, pp. 489-490
Scientific Notes and News, pp. 490-494
University and Educational Notes, p. 494
Discussion
- On the Phylogeny of Horses, Dogs and Cats, pp. 494-496
- W. D. Matthew
- The Practical Significance of Increasing the Daily Light Period of Winter for Strawberry Breeding, pp. 496-497
- George M. Darrow; George F. Waldo
- The Precise Expression of ``Dryness'', p. 497
- C. G. Bates
- The Stoning of a Minor Prophet, pp. 497-498
- P. B. S.
Scientific Books
- ----------------, pp. 498-499
- Conditioned Reflexes
- I. P. Pavlov
- Lectures on Conditioned Reflexes
- Ivan Petrovitch Pavlov
- Review author[s]: A. J. Carlson
- ----------------, pp. 499-500
- The Story of the Moon
- Garrett P. Serviss
- Review author[s]: Carolyn Gesler
Scientific Apparatus and Laboratory Methods
- The Dissection of the Spiral Valve of Squalus Acanthias, p. 500
- Charles E. Hadley
Special Articles
- X-Rays and Mutations, pp. 500-501
- James W. Mavor
- The Occurrence of Podsol Soils in Quebec Province, pp. 501-502
- R. R. McKibbin
The National Academy of Sciences, pp. 502-504
Science News, pp. x+xii+xiv
Previous Issue: New Series, Vol. 69, No. 1792, May 3, 1929
Next Issue: New Series, Vol. 69, No. 1794, May 17, 1929