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SCIENCE 



[N. S. Vol. XXV. No. 646 



Uses in the Arts,' Dr. William McPherson, Ohio 

 State University. 



Mr. a. Eolland Rainy, M.P., delivered an 

 address on ' The Necessity for a Minister of 

 Public Health ' before the New Reform Club, 

 London, on May 10, when the chair was 

 taken by Sir W. J. Collins, M.P. 



Professor William Wright has delivered 

 three lectures on the ' Prehistoric and Early 

 Historic Inhabitants of England' at the 

 Royal College of Surgeons, London. 



Professor Damd P. Todd, of Amherst Col- 

 lege, sailed on the Panama on May 11 for 

 Colon, Panama, Callao, Peru and Iquique, 

 Chile, in charge of the Lowell Astronomical 

 Exhibit to the Andes sent out by Professor 

 Percival Lowell, of Boston. Mr. E. C. 

 Slipher is photographer, Mr. A. G. Use of 

 Alvan Clark & Sons the instrument maker, 

 and Mr. R. D. Eaglesfield, mechanician. The 

 party will observe the opposition of Mars with 

 the eighteen-inch telescope of Amherst Col- 

 lege Observatory, and the annular eclipse of 

 the sun, July 10, for Professor Newcomb. 



Professor George P. Merrill, head curator 

 of geology at the U. S. National Museum, has 

 just left Washington upon an investigating 

 tour to Canyon Diablo, near Flagstaff, Ari- 

 zona. He is sent out by the Smithsonian In- 

 stitution to study the geologic origin of a 

 remarkable crater-form depression at the 

 Canyon, in connection with which two theories 

 have been held, one ascribing its origin to a 

 prehistoric volcanic explosion, the other hold- 

 ing that it is due to the impact of a gigantic 

 mass of meteoric iron. The object of Dr. 

 Merrill's trip is to determine if possible which 

 of these theories is correct, or whether its 

 origin must be accounted for in some other 

 manner. While on the trip. Dr. Merrill will 

 visit the so-called petrified or fossil forest near 

 Holbrook, Arizona, to collect for the National 

 Museum specimens for scientific work. 



The St. Louis Medical Society com- 

 memorated on April 27 the twenty-fifth anni- 

 versary of the death of Dr. John T. Hogden, 

 the eminent surgeon. 



Dr. Rudolf Aderhold, director of the Bio- 

 logical Department of the Agricultural and 



Forestry Institute of Berlin, has died at the 

 age of forty-two years. 



The deaths are announced of M. Paul 

 Porrier, professor of anatomy in the Uni- 

 versity of Paris; of Dr. Oscar Doebner, pro- 

 fessor of chemistry at Halle, and of Mr. 

 George E. Davis, founder and editor of the 

 Chemical Trade Journal. 



The senate of the state of Pennsylvania has 

 unanimously passed a bill appropriating $350,- 

 000 to the American Philosophical Society to 

 provide a fitting memorial to Benjamin 

 Franklin. 



The collection of geological books and 

 pamphlets which was the property of the late 

 Dr. Carl Rominger has been donated to the 

 Russell Library of the University of Michigan. 



Professor Theodore D. A. Cockerell, of 

 Boulder, Colorado, recently transmitted to 

 Dr. Arthur Hollick, of the New York Bot- 

 anical Garden, a collection of undescribed 

 fossil plant remains from the Tertiary beds 

 of Florissant in that state. 



The Pathological Society of Philadelphia 

 celebrated its semi-centennial on May 9 and 

 10. On the first day there was an exhibition 

 in the Miitter Musevmi of the College of 

 Physicians. On May 10 there was a luncheon 

 and a dinner and the following addresses were 

 made : ' The Role of Protozoa in Pathology,' 

 by Dr. Frederick G. Novy, of the University 

 of Michigan; ' The Dynamic Point of View 

 in Pathology,' by Professor Alonzo E. Taylor, 

 University of California ; ' The Newer Pathol- 

 ogy,' by Dr. Simon Flexner, Rockefeller Insti- 

 tute, and 'Pathology and Practise,' by Dr. 

 WiUiam Osier, Oxford University, England. 



At a meeting held recently under the presi- 

 dency of Professor Golgi it was decided that 

 an Italian Neurological Society should be es- 

 tablished. Professor Bianchi was elected 

 president, Professors Morelli and Mingazzini, 

 vice-presidents, and Professor Tanzi, general 

 secretary. The first meeting has been fixed 

 for October 16, lY and 18 of the present year 

 at Naples. 



The British Medical Journal states that the 

 tenth congress of Polish physicians and men 

 of science will be held this year at Lemberg, 



