426 



SCIENCE 



[Vol. LV, No. 1425 



Botanical Garden, and Dr. Everett Pearson, of 

 the University of Indiana. 



Ox April 4, Professor W. H. Hobbs, of the 



University of Michigan, completed his lectures 

 at the Technical High School of Delft in ex- 

 change with Professor Brouwer. On May 4, he 

 will sail for the Windward Islands and the 

 west coast of South America, returning to Ann 

 Arbor on September 1. 



The National Research Council has appoint- 

 ed a committee to investigate the properties of 

 ammonium nitrate. The personnel of the com- 

 mittee is as follows : C. E. Munroe, National 

 Research Council, Chairman; S. P. Howell, 

 representing the Bureau of Mines; R. C. Tol- 

 man, representing the Department of Agricul- 

 ture; C. G. Storm, representing the Ordnance 

 Department, United States Army; C. P. 

 Beistle, representing the Bureau of Explosives 

 of the American Railway Association; and 

 C. A. Bigelow, representing the Institute of 

 Makers of Explosives. It is expected that the 

 Navy Department will also be represented on 

 this committee. 



The spring meeting of the American Elec- 

 trochemical Society will be held in Baltimore, 

 beginning on April 27. The morning will be 

 devoted to a symposium on electric cast iron 

 in charge of A. P. Hinckley and Bradley 

 Stoughton. In the evening Professor R. W. 

 Wood, of Johns Hopkins University, will 

 speak on the subject of fluorescence. Acheson 

 Smith, the retiring president, will deliver the 

 presidential address. 



Dr. Hendeik Anton Lorentz, of the Uni- 

 versity of Leiden, has given, in the Jefferson 

 Physical Laboratory at Harvard University, 

 three lectures on mathematical physics. It 

 will be remembered that Dr. Lorentz has been 

 lecturing at the California Institute of Tech- 

 nology, Pasadena, whose invitation to deliver a 

 special series of lectures was the occasion of 

 his present visit to the United States. Before 

 returning to the Netherlands on or about the 

 first of May, he is visiting a number of Amer- 

 ican universities. 



Dr. E. W. Washburn, of the department of 

 ceramics of the Universitv of Illinois, lectured 



on April 6 before the Franklin Institute on 

 "Physical chemistry and ceramics." On April 

 13 a lecture on "The physics of the three- 

 electrode bulb" was given by Professor K. T. 

 Compton, of Princeton University. On April 

 19, Professor William D. Harkins lectured be- 

 fore the institute on "The structure and build- 

 ing of atom nuclei." 



Professor Charles R. Stockard, of the depart- 

 ment of anatomy, Cornell University Medical 

 College, delivered a lecture on heredity at the 

 meeting of the Philadelphia Pediatric Society, 

 on March 14. 



Professor J. Paul Goode, of the University 

 of Chicago, gave an address at the annual 

 meeting of the Cleveland Chamber of Com- 

 merce on March 21 on the subject, "American 

 opportunity in world trade." On March 22 he 

 spoke at Georgetown University, Washington, 

 on "Ajnerica as a world power," and on March 

 24 he lectured on "Industrial Japan" for the 

 National Geographic Society at Washington. 



Dr. Charles W. Eliot, president emeritus 

 of Hai'vard Universitj', spoke on "Prevention 

 of disease through animal experimentation," at 

 a public health conference in Boston, on March 

 29, under the auspices of the Massachusetts 

 State Federation of Women's Clubs. 



The Bakerian lecture of the Royal Society 

 will be delivered on March 9 by Professor T. R. 

 Merton and Mr. S. Barratt on "The spectrum 

 of hydrogen." 



Dr. Harris Graham, for thirty years pro- 

 fessor of pathology and practice of medicine 

 in the Ameiican University of Beirut, died in 

 his sixtieth year on February 27, at Beirut, 

 Syria. 



Sir Patrick Manson, distinguished for his 

 work on malaria and tropical diseases, died on 

 April 8 at the age of seventy-six years. 



Dr. J. T. Merz, author of The History of 

 European Thought in the Nineteenth Century, 

 died on March 21 at the age of eighty-two 

 years. 



The death, on March 24, at fifty-eight years 

 of age, is announced of Professor W. B. Bot- 

 tomley, professor of botany at King's College, 

 London, from 1893 to 1921. 



