894 



SCIENCE 



[N. S. Vol. XXX. No. 781 



are stood aside for a time, when it will be seen 

 that they have both acquired exactly the same 

 color, although the acquisition of it was more 

 rapid in the solution which contained the 

 trace of ferrous sulphate. 



Lastly, it has been suggested that the iron 

 merely brings about the catalytic decomposi- 

 tion of the peroxide (if such is the case, as 

 Dr. Fenton has pointed out, why should not 

 other salts produce the same eilects ?), and this 

 suggestion seems at first sight to be confirmed 

 by the fact that when the solution containing 

 no iron is warmed (thereby bringing about 

 the thermal decomposition of the peroxide, the 

 result of which is just the same as that of 

 " catalytic " decomposition) the color is de- 

 veloped with the same velocity as in the case 

 of the cold solution containing traces of 

 ferrous sulphate. 



W. J. S. Naunton 



TEE CONVOCATION WEEK MEETINGS OF 

 SCIENTIFIC SOCIETIES 



The American Association for the Advance- 

 ment of Science and the national scientific 

 societies named below will meet at Boston, 

 Mass., during convocation week, beginning on 

 December 27, 1909. 



American Association for the Advancement of 

 Science. — Retiring president. Professor T. C. 

 Chamberlin, University of Chicago; president. Dr. 

 David Starr Jordan, of Stanford University; per- 

 manent secretary, Dr. L. O. Howard, Cosmos Club, 

 Washington, D. C. ; general secretary, Professor 

 Dayton C. Miller, Case School of Applied Science, 

 Cleveland, Ohio. 



Local Executive Committee. — H. W. Tyler, 

 chairman; Thomas Barbour, J. S. Kingsley, Ed- 

 ward R. Warren, John Warren, George W. Swett, 

 secretary. 



Section A, Mathematics and Astronomy. — ^Vice- 

 president, Professor Ernest W. Bro^vn, Yale Uni- 

 versity; secretary, Professor G. A. Miller, Uni- 

 versity of Illinois, Urbana, Illinois. 



Section B, Physics. — Vice-president, Dr. Louis 

 A. Bauer, Carnegie Institution, Washington, D. 

 C. ; secretary. Professor A. D. Cole, Vassar Col- 

 lege, Poughkeepsie, N. Y. 



Section C, Chemistry. — Vice-president, Pro- 

 fessor William McPherson, Ohio State University; 

 secretary, C. H. Herty, University of North Caro- 

 lina, Chapel Hill, N. C. 



Section D, Mechanical Science and Engineering. 

 — Vice-president, Professor John F. Hayford, 

 Northwestern University; secretary, G. W. Bis- 

 sell, Michigan Agricultural College, East Lansing, 

 Mich. 



Section E, Geology and Geography. — Vice-presi- 

 dent, Reginald W. Brock, Canadian Geological 

 Survey; secretary, F. P. Gulliver, Norwich, Conn. 



Section F, Zoology. — Vice-president, Professor 

 William E. Ritter, La Jolla, Cal.; secretary, Pro- 

 fessor Morris A. Bigelow, Columbia University, 

 New York City. 



Section G, Botany. — Vice-president, Professor 

 David Penhallow, McGill University; secretary, 

 Professor H. C. Cowles, University of Chicago, 

 Chicago, 111. 



Section E, Anthropology. — Vice-president, Dr. 

 W. H. Holmes, Bureau of American Ethnology; 

 secretary. Dr. George Grant MacCurdy, Yale Uni- 

 versity, New Haven, Conn. 



Section I, Social and Economic Science. — ^Vice- 

 president, Byron W. Holt, 54 Broad St., New 

 York City; secretary. Dr. John Franklin Crowell, 

 44 Broad St., New York City. 



Section K, Physiology and Experimental Medi- 

 cine.- — Vice-president, Professor C. S. Minot, Har- 

 vard Medical School; secretary. Dr. Wm. J. Gies, 

 College of Physicians and Surgeons, Colimibia 

 University, New York City. 



Section L, Education. — Vice-president, Dean 

 James E. Russell, Columbia University; secre- 

 tary. Professor C. R. Mann, University of Chi- 

 cago, Chicago, 111. 



The American Society of Naturalists. — Decem- 

 ber 29. President, Professor T. H. Morgan, Co- 

 lumbia University; secretary, Dr. H. McB. 

 Knower, University of Toronto, Toronto, Can. 

 Central Branch. President, Professor R. A. 

 Harper, University of Wisconsin; secretary. Pro- 

 fessor Thomas G. Lee, University of Minnesota, 

 Minneapolis, Minn. 



The American Mathematical Society. — Decem- 

 ber 28-30. President, Professor Maxime BOcher, 

 Harvard University; secretary. Professor F. N. 

 Cole, 501 West 116th St., New York City. 



American Federation of Teachers of the Mathe- 

 matical and Natural Sciences. — December 27, 28. 

 President, Professor H. W. Tyler, Massachusetts 

 Institute of Technology; secretary. Professor C. 

 R. Mann, University of Chicago, Chicago, 111. 



The American Physical Society. — President, 

 Professor Henry Crew, Northwestern University; 

 secretary. Professor Ernest Merritt, Cornell Uni- 

 versity, Ithaca, N. Y. 



