756 



SCIENCE. 



LN. S. Vol. XVII. No. 436. 



first week a system of two hundred and sixty- 

 sectional, fifty departmental, seven divisional, 

 three congressional addresses which belong in- 

 ternally together, and are merely parts of the 

 one great thought which the world needs, the 

 unity of knowledge. — ^Professor Hugo Miins- 

 terburg in the Atlantic Monthly. . 



SCIENTIFIC NOTES AND NEWS. 



During the week beginning June first. Pro- 

 fessor J. J. Thomson, F.E.S., Cavendish pro- 

 fessor of experimental physics in the Uni- 

 versity of Cambridge, will give a course of 

 lectures in the Physical Laboratory of the 

 Johns Hopkins University on 'A Theory of 

 the Arc and Spark Discharges.' 



Professor Klement Arkadijevic Timir- 

 JAZEV, professor of botany at Moscow, gave 

 the Croonian lecture before the Eoyal Society 

 on April 30, his subject being ' The Cosmical 

 Function of the Green Plant.' 



The University of Glasgow has conferred 

 the degree of Doctor of Laws on Sir Norman 

 Lockyer, director of the Solar Physics Ob- 

 servatory, South Kensington, and editor of 

 Nature; Dr. Thomas Oliver, professor of 

 physiology in the University of Durham, and 

 Mr. Philip Watts, director of naval construc- 

 tion at the Admiralty. 



The University of Dublin has conferred 

 the degree of Doctor of Science on Sir Wil- 

 liam Abney, P.E.S., assistant secretary of the 

 British Board of Education, known for his 

 work on photography and color vision. 



We learn from Nature that M. Lippmann 

 is to succeed M. Poincare as president of the 

 French Astronomical Society this month. M. 

 Janssen has been elected president d'honneur. 

 The society's prize has been awarded to M. 

 Charlois for the discovery of a large number 

 of minor planets, and the Janssen prize to 

 M. Giacobini for the discovery of seven 

 comets. 



Professor Ealph W. Tower, of Brown Uni- 

 versity, associate professor of chemical phys- 

 iology, has been elected head of the depart- 

 ment of physiology and curator of the books 

 and publications in the American Museum 

 of Natural History in New York City. 



Mr. Sidney D. Townley has been placed in 

 charge of the International Latitude Observa- 

 tory at Ukiah, Cal. 



Mr. Hugh H. Bennett, assistant in the 

 Chemical Laboratory, University of North 

 Carolina, has accepted the position of assist- 

 ant in the Chemical Laboratory, Division of 

 Soils, U. S. Depaitment of Agriculture. 



Dr. Capitan has been made a member of 

 the committee on historic and scientific works 

 of the French ministry of public instruction, 

 in room of the late M. Bertrand. 



Mr. F. a. Delano, general manager of the 

 C. B. and Q. E. E., gave an address before the 

 engineering students of Purdue University 

 upon ' The Comparative Development of 

 American and European Eailways,' on April 

 13. 



Drs. William H. Welch and William Osier 

 gave a dinner at the Maryland Club, April 18, 

 to Dr. Eobert Fletcher, of Washington, editor 

 of the ' Index Medicus,' to celebrate the revival 

 of its publication. 



Me. H. F. Perkins, of the University of Ver- 

 mont, has been given a research assistantship 

 by the Carnegie Institution for study of 

 special organs and structure of jelly-fish which 

 affect their distribution. 



Professor Charles S. Sargent, director of 

 the Arnold Aboretum, Harvard University, will 

 spend next year abroad, devoting a part of 

 the time to studying the trees of Siberia. 



Dr. W. a. Setchell, professor of botany in 

 the University of California, has been given 

 a year's leave of absence which he will spend 

 in Europe. 



M. E. Jaffa, assistant professor of agricul- 

 ture in the University of California, who has 

 for the present year been carrying on studies 

 in nutrition in conjunction with Professor W. 

 O. Atwater, has gone to Europe to visit the 

 centers where similar work is in progress. 



The National Geographic Society has ap- 

 pointed Mr. William J. Peters, of the U. S. 

 Geological Survey, as its representative on the 

 Arctic expedition to be sent by Mr. William 

 Ziegler. Mr. Peters will be second in com- 



