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Previous Issue: New Series, Vol. 71, No. 1840, Apr. 4, 1930
Next Issue: New Series, Vol. 71, No. 1842, Apr. 18, 1930
Front Matter (4 pp.)
Emergent Evolution and Hybridism, pp. 371-375
- Robert K. Nabours
Bibliochresis: The Pilot of Research, pp. 375-378
- William A. Hamor; Lawrence W. Bass
Obituary
- Stephen Alfred Forbes--A Tribute, pp. 378-381
- Henry B. Ward
Scientific Events
- The University Film Foundation of Harvard University, p. 381
- The U. S. Public Health Service, pp. 381-382
- Chemistry at the Summer Quarter of the Ohio State University, p. 382
- Engineering Pageant, p. 382
Scientific Notes and News, pp. 383-386
Discussion
- A Sacrifice to Pele, p. 386
- G. R. Wieland
- Branching Habits of the Hevea Rubber Tree, pp. 386-387
- O. F. Cook
- What is Control?, p. 388
- C. W. Woodworth
- Oestrus Following the Removal of One Ovary, pp. 388-389
- Frederick E. Emery
- A New Record of Castoroides ohioensis from Illinois, p. 389
- Frank Collins Baker
- Professional Ethics and the Artist, pp. 389-390
- Justus F. Mueller
Special Correspondence
- Statement in regard to Professor Einstein's Publications, pp. 390-391
- W. F. G. Swann
- Conference at Chichen Itza, pp. 391-392
- A. V. Kidder
Scientific Apparatus and Laboratory Methods
- Laboratory and Teaching Devices Made from Plaster of Paris, pp. 392-393
- Alvah R. McLaughlin
- Eliminating Opaquing by Alternating Black and White Backgrounds While Making a Photograph, pp. 393-394
- Frank P. McWhorter
Special Articles
- Components of Air in Relation to Animal Life, pp. 394-396
- J. Willard Hershey
- Some Constituents of Derris and "Cube" Roots Other Than Rotenone, p. 396
- E. P. Clark
Science News, pp. x+xii+xiv
Previous Issue: New Series, Vol. 71, No. 1840, Apr. 4, 1930
Next Issue: New Series, Vol. 71, No. 1842, Apr. 18, 1930