654 



SCIENCE 



[N. S. Vol. XXIX. No. 747 



physics in the University of Berlin, lecturer 

 in mathematical physics in Columbia Univer- 

 sity, 1908-1909. The lectures will be given 

 in Germanj on Friday afternoons at 4:10, 

 and Saturday mornings at 10 :10 from April 

 23 to May 15. 



April 23 and 24 — Introduction. " Reversibility 

 and Irreversibility." 



April 30 and May 1 — " Kinetic Theory of Mat- 

 ter." 



May 7 and 8 — " Radiation of Heat." 



May 14 and 15 — " General Dynamics. The 

 Relativity Principle." 



Frank Leo Tufts, B.S. (Antioch, '91), A.B. 

 (Harvard, '94), Ph.D. (Columbia, '96), ad- 

 junct professor of physics in Columbia Uni- 

 versity and the author of valuable contribu- 

 tions to experimental physics, was killed by 

 an electric shock, on April 15. He was born 

 in Findlay, Ohio, in 1871. 



Dr. W. H. Edwards, known for his work on 

 the butterflies of North America, died at Coal- 

 buro, West Virginia, on April 4, at the age of 

 eighty-eight. 



The death is also announced of the Rev. 

 Dr. Sereno E. Bishop, who had spent more 

 than iifty years as an American missionary 

 in the Hawaiian Islands and had made con- 

 tributions to our knowledge of their volcanoes. 



There will be a New York State civil service 

 examination on May 1 for the position of 

 assistant bacteriologist in the State Depart- 

 ment of Health at a salary of $1,500. 



A North Dakota Acvdemy op Science has 

 been organized and will hold a spring meeting 

 at Grand Forks on May 21. At this meeting 

 Professor M. A. Brannon will outline the work 

 that is before the academy in the biological 

 sciences ; Dr. Geo. Stewart that in the physical 

 sciences, and Professor D. E. Willard that in 

 geology. The fijst two named are in the 

 State University at Grand Forks and the last 

 is in the Agricultural College at Fargo. The 

 president of the academy is Professor H. A. 

 Brannon, of the State University, and the 

 secretary is L. B. McMuUen, of the State 

 Normal School. 



PiiANS for the Pacific Coast meeting of the 

 American Institute of Mining Engineers pro- 



vide for a visit to Yellowstone Park, Sep- 

 tember 25 to 30; Spokane, October 2 to 6; 

 Seattle, October 8 to 11; Tacoma, October 12, 

 and Salt Lake City, October 15 to 19. The 

 special train is to leave New York, September 

 22, and return just a month later. 



The semi-annual meeting of the American 

 Institute of Chemical Engineers will be held 

 on June 24 and 25 at the Polytechnic Insti- 

 tute, Brooklyn, N. Y. The program will con- 

 sist of papers, excursions and an exhibit of 

 chemical engineering apparatus. 



A CONFERENCE On public health is being held 

 this week at the University of Illinois under 

 the auspices of the university and the Illinois 

 State Board of Health. Professor W. T. Sedg- 

 wick, of the Massachusetts Institute of Tech- 

 nology, will deliver a series of lectures on the 

 general subject, " Science in the Service of 

 Public Health." Dr. T. J. Bryan, chemist 

 of the Illinois State Food Commission, will 

 speak on " The Relation of Pure Food to 

 Public Health." A special session of health 

 officers will be held on April 23, for general 

 discussion of problems of health in the state. 

 Dr. Egan, secretary of the State Board of 

 Health, will open this session. 



Dr. F. Creighton Wellman, who has had 

 long experience as health officer in Portuguese 

 East Africa, gave a series of extensive lectures 

 under the auspices of the medical department 

 of Tulane University on the following dates 

 and subjects: 

 April 12 — " Insects and Human Diseases." 

 April 13 — " Diseases of West Africa." 

 April 14 — " A Naturalist in West Africa." 

 April 15 — " Why the Physician in Temperate 

 Climates should study Tropical Diseases." 



April 16—" General Biological Conditions in 

 West Africa." 



April 17 — "Anthropological Notes made in 

 West Africa." 



A COURSE of eight free popular lectures was 

 given at the Chicago Academy of Sciences on 

 Friday evenings during February, March and 

 April, as follows : 



February 19 — " The Volcano of Kilauea," by 

 Mr. William A. Bryan, president, The Pacific 

 Scientific Institution. 



February 26 — " The Deserts of Arizona," by 



