December 1, 1916] 



SCIENCE 



111 



ciety and the American Physical Society, will 

 hold a joint session on " The Structure of 

 Matter " on the morning and afternoon of 

 Wednesday. These sessions will be held at 

 the City College, which will provide luncheon 

 and opportunity to inspect the buildings. On 

 Thursday evening, at the American Museum 

 of Natural History, Professor A. A. Noyes, of 

 the Massachusetts Institute of Technology, 

 will give one of the lectures complimentary to 

 the citizens of the city on " The Production of 

 Nitrogen." This lecture will be followed by 

 a reception and a chemical exhibit. The 

 American Electrochemical Society, as well as 

 the American Chemical Society, will meet in 

 affiliation with the section, and plans a sym- 

 posium on " The Conduction of Electricity 

 through Gases." 



Section D, Engineering, will hold a session 

 in the Engineering Societies Building, on the 

 invitation of the United Engineering Society, 

 the American Society of Civil Engineers, the 

 American Institute of Mining Engineers, the 

 American Society of Mechanical Engineers 

 and the American Institute of Electrical 

 Engineers. At this meeting Dr. Bion J. Ar- 

 nold will give the address of the retiring chair- 

 man and there will be addresses by representa- 

 tives of the engineering societies, followed by 

 a reception to engineers and those working in 

 sciences related to engineering. Section D 

 will hold a joint session in the assembly hall 

 of the Automobile Club of America, with the 

 National Highways Association, the Automo- 

 bile Club of America and the National Auto- 

 mobile Chamber of Commerce. There will 

 also be joint sessions with the Society for the 

 Promotion of Engineering Education and a 

 session on sanitary engineering. 



Section E, Geology and Geography, will 

 meet on Tuesday and Wednesday, at Colum- 

 bia University, when a special program by 

 state geologists on the geology of their respec- 

 tive states will be presented. Owing to the 

 death of Professor Charles S. Prosser, there 

 will be no vice-presidential address. The As- 

 sociation of American Geographers will hold 

 its meetings following those of the geologists. 

 The address of the president, Professor Mark 



Jefferson, of the Michigan State Normal Col- 

 lege, will be on " The Geographic Provinces of 

 the United States." The American Alpine 

 Club will meet at the New York Public Li- 

 brary on December 30. 



Section F, Zoology, will hold its meetings 

 with the American Society of Zoologists and 

 the American Society of Naturalists. It is 

 expected that Professor Vernon L. Kellogg, of 

 Stanford University, will return from Europe 

 in time to give the address of the retiring 

 chairman. A dinner in honor of Professor E. 

 B. Wilson, a past-president of the association, 

 will be given at the Hotel Manhattan on 

 Thursday evening, by his former students and 

 colleagues. The Vertebrate Paleontologists; 

 will meet at the American Museum of Natural- 

 History on Thursday and Friday. The Ento- 

 mological Society of America will meet on 

 Tuesday and Wednesday, the address of the 

 retiring president, Professor T. D. A. Cock- 

 erell, on " Fossil Insects," being given on the 

 evening of the latter day. The American As- 

 sociation of Economic Entomologists will meet 

 on Thursday, Friday and Saturday. There 

 will be an address by the president, Dr. C. 

 Gordon Hewitt, of the Dominion Experimental 

 Farm at Ottawa. The entomologists will 

 meet at Columbia University, with probably 

 one session at the American Museum, 



Section G, Botany, will hold a general-in- 

 terest session on the afternoon of Wednesday, 

 at which the address of Professor William A. 

 Setchell, of the University of California, on 

 " The Geographic Distribution of Modern 

 Algae," will be given. This will be followed by 

 a symposium on the relations of chemistry to 

 botany, opened by W. J. V. Osterhout and J. 

 Arthur Harris. This is a joint session with 

 the American Botanical Society, the American 

 Phytopathological Society and the Ecological 

 Society of America. Each of these societies 

 will hold important programs. On Thursday 

 there will be a joint session for the reading of 

 invitation papers, at which the speakers will 

 be William A. Murrill, Erwin F. Smith and 

 W. A. Orton. In the evening a dinner for 

 botanists will be given at the Hotel McAlpin, 

 at which the address of Professor John M. 



