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Science, New Series, Vol. 36, No. 930, Oct. 25, 1912


Previous Issue: New Series, Vol. 36, No. 929, Oct. 18, 1912
Next Issue: New Series, Vol. 36, No. 931, Nov. 1, 1912


Front Matter (1 p.)
The Migration of Students, pp. 533-543
E. P. Lyon

The Geographical Distribution of the Student Body at a Number of Universities and Colleges, pp. 543-550
Rudolf Tombo

The Smithsonian Expedition to Study the Heat of the Sun, pp. 550-551
Professor Morris Loeb, p. 551
Scientific Notes and News, pp. 551-555
University and Educational News, pp. 555-557


Discussion and Correspondence
``Theoretical Astronomy'', p. 557
W. W. Campbell
The Unanimous Vote Rule in the International Commission on Zoological Nomenclature, pp. 557-558
C. W. Stiles
The Symbolic Statement of Relationships, pp. 559-560
Arthur E. Bostwick


Scientific Books
----------------, p. 560
Magnetism and Electricity
Brooks; Poyser
Review author[s]: J. H. Morecroft
----------------, pp. 560-561
The Life of the Plant
C. A. Timiriazeff
Review author[s]: G. T. M.
----------------, pp. 561-562
The Toxicity of Caffein: An Experimental Study on Different Species of Animals
William Salant; J. B. Rieger
The Elimination of Caffein: An Experimental Study on Herbivora and Carnivora
William Salant; J. B. Rieger
Review author[s]: William N. Berg
----------------, p. 562
Catalogue of the Lepidoptera Phalœnœ in the British Museum; Catalogue of the Noctuidœ in the Collection of the British Museum
George F. Hampson
Review author[s]: Harrison G. Dyar


Special Articles
The Nature of the Fertilization Membrane of the Egg of the Sea Urchin (Arbacia Punctulata), pp. 562-564
G. L. Kite
A Simple Method of Making Artificial Cells Resembling Sea Urchin Eggs in Certain of Their Physical Properties, pp. 564-565
E. Newton Harvey
A Method of Determining the Average Length of Life of Farm Equipment, pp. 565-566
Populations That are Decreasing Or Increasing, pp. 566-568
W. J. Spillman


Quarter Centennial of the Iowa Academy of Science, pp. 568-570
L. S. Ross

Societies and Academies, p. 570

Previous Issue: New Series, Vol. 36, No. 929, Oct. 18, 1912
Next Issue: New Series, Vol. 36, No. 931, Nov. 1, 1912



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