v«l X^ A JL-rf JL^ \^ 



A Weekly Journal devoted to the Advancement 

 of Science, publishing the official notices and 

 proceedings of the American Association for the 

 Advancement of Science, edited by J. McKeen 

 Cattell and published every Friday by 



THE SCIENCE PRESS 



I 1 Liberty St., Utica, N. Y. Garrison, N. Y. 



New York City: Grand Central Terminal 



Single Copies, 15 Cts. Annual Subscription, S6.00 



Entered as second-class matter January 21. 1922. at the Post 

 Office at Utica. N. Y.. under the Act of March 3, 1879. 



Vol. lv March 31, 1922 No. 1422 



Dedication of the Norman Bridge Laboratory 

 of Physics of the California Institute of 

 Technology: 



Presentation: De. Norman Beidgb 327 



Address of Acceptance: Dr. E. A. Milli- 



KAN 330 



A Joint Investigation of the Constitution 

 of Matter and the Nature of Radiation: 



Dk. George E. Hale 332 



Research in the Norman Bridge Labora- 

 tory: Dr. H. a. Lorentz 334 



Biotic Areas and Ecologic Sahitats: Dr. 



L. E. Dice 335 



Capture in Atlantic Waters of the Giant 



May: Dr. E. W. Gudger 338 



John Caspar Branner : Dr. David Stare 



Jordan 340 



Scientific Events: 



The World Production of Coal in 1931; 

 The Mount Everest Expedition ; The Amer- 

 ican Chemical Society; The John Scott 



Medal Fund 341 



Scientific Notes and Nexus 344 



University and Educational Notes 347 



Discussion and Correspondence: 



Selective Fertilization as an Indicator of 

 Germinal Differences: Dr. D. F. Jones. 

 Gravitational Absorption: Dr. Paul E. 



Hetl 348 



Scientific BooTcs: 



Wheeler on Social Beetles in British Guiana 

 and FarquharsoH on the Bionomics of 

 Southern Nigerian Insects: Professor 



T. D. A. COCKEBELL 350 



Special Articles: 



Sealing Tungsten into Pyrex: Dr. L. T. 

 Jones. A New Sclerotina on Mulberry: 



B. A. SiEGLEE and A. E. Jenkins 352 



The American Mathematical Society: Pro- 

 fessor E. G. D. ElCHAEDSON 354 



DEDICATION OF THE NORMAN 

 BRIDGE LABORATORY OF 

 PHYSICS OF THE CALI- 

 FORNIA INSTITUTE OF 

 TECHNOLOGY 



PRESENTATION BY NORMAN BRIDGE 



This is one of a series of pleasant occasions 

 that iiave attended the growth and metamor- 

 phosis of this school for nearly a third of a 

 century. 



Each one has marked some accession of value 

 in its progress from a small affair with varied 

 aims and moderate ambitions, to a concentra- 

 tion of effort on the most ambitious plans for 

 the selection and excellence of the few. Some- 

 times the acquisition has been a material one, 

 as of buildings, gi-ounds and tools; sometimes 

 it has been spiritual and intellectual. To-day 

 we welcome both forms. 



The changes in the institution have come 

 through a process of elimination of the casual 

 and easy — designed for the many; and of the 

 engrafting upon it of the more difficult, the 

 more costly — and ultimately the more potent, 

 for the few who can measure up to its require- 

 ments. 



And the most telling addition of all has been 

 the deliberate movement toward systematic re- 

 search — otherwise the search for additions to 

 the knowledge of the world. 



We are gathered here to take note of tlie 

 latest material addition to the equipment, as 

 well as the latest spiritual and intellectual 

 accession. This laboratory is undoubtedly a 

 long step toward an ideal outfit for teaching, 

 and for the research that is in the greatest 

 demand at this time. But no man can guess 

 what new facilities will be needed within a few 

 j'ears, for novel lines of research not now even 

 thought of. 



The growth of knowledge comes step by 

 step; sometimes the steps are short, frequent, 

 and strictly progressive; at other times they 



