OFFICERS AND MEMBERS 
xiii 
Wilson, Edmund B Columbia University, New York City. 
Wood, Horatio C 4107 Chester Ave., Philadelphia, Pa. 
WcoD, Robert W Johns Hopkins University, Baltimore, Md. 
Woodward, Robert S Carnegie Institution, Washington, D. C. 
Smith, Sidney I Yale University, New Haven, Conn. 
FOREIGN ASSOCIATES 
Arrhenius, S. a Nobelinstitut, Stockholm. 
Backlund, Oskar Astronomical Observatory, Pulkova. 
Baeyer, Adolph Ritter von Universitdt, Munich. 
Barrois, Charles Universite, Lille. 
Br</)GGEr, W. C Universitet, Christiania. 
Crookes, Sir William London. 
Darboux, Gaston Academy of Sciences, Paris. 
Deslandres, Henri Astrophysical Observatory, Meudon. 
Dewar, Sir James University, Cambridge. 
Fischer, Emil Chemisches Institut der Universitdt, Berlin. 
Forsyth, A. R Trinity College, Cambridge. 
Geikie, Sir Archibald Haslemere, Surrey. 
Groth, Paul von Universitdt, Munich. 
Hetm, Albert Zurich. 
HiLBERT, David Universitdt, G'ottingen. 
Kapteyn, John C Rijks Universitdt, Groningen. 
Klein, Felix Universitdt, G'ottingen. 
KossEL, Albrecht Heidelberg. 
Kustner, Karl Friedrich Bonn. 
Lankester, Sir E. Ray South Kensington, London. 
L ARMOR, Sir Joseph St. Johns College, Cambridge. 
LoRENTZ, Hendrik Anton Rijks Universiteit, Leiden. 
Ostwald, Wilhelm Grossbothen, bet Leipzig 
Pavlov, Ivan Petrovitch Imperial Institute for Experimental Medicine, Petrograd. 
Penck, Albrecht Universitdt, Berlin. 
Pfeffer, Wilhelm Botanisches Institut der Universitdt, Leipzig. 
Picard, Charles fimLE Universite, Paris. 
Rayleigh, Lord University, Cambridge. 
Retztus, Gustav Hogskolan, Stockholm. 
Rutherford, Sir Ernest University, Manchester. 
Schuster, Arthur Secretary of the Royal Society, London. 
Seeliger, Hugo Ritter von Universitdt, Munich. 
Thomson, Sir Joseph University, Cambridge. 
Volterra, Vito Univer^itd, Rome. 
Vries, Hugo de Universiteit, Amsterdam. 
Waals, Johannes D. van der Amsterdam. 
Waldeyer, Wilhelm Universitdt, Berlin 
Wolf, Max F. J. C Heidelberg. 
Wundt, Wilhelm , Universitdt, Leipzig . 
