OFFICERS AND MEMBERS xi 
Morse, Harmon N Johns Hopkins University, Baltimore, Md. 
MouLTON, F. R University of Chicago, Chicago, III. 
Nichols, Edward L Cornell University, Ithaca, N. Y. 
Nichols, Ernest F Dartmouth College, Hanover, N. H, 
NoYES, Arthur A Massachusetts Institute of Technology, Boston, Mass. 
NoYES, William A University of Illinois, Urbana, III. 
OsBORN, H. F American Museum of Natural History, New York City. 
Osborne, T, B Agricultural Experiment Station, New Haven, Conn. 
Osgood, William Fogg Harvard University, Cambridge, Mass. 
Parker, George H 16 Berkeley St., Cambridge, Mass. 
Pickering, Edward C Harvard College Observatory, Cambridge, Mass. 
PiRSSON, Louts V 41 Trumbull St., New Haven, Conn. 
Prudden, T. Mitchell Columbia University, New York City. 
PuMPELLY, Raphael Gibbs Ave., Newport, R. I. 
PupiN, Michael I Columbia University, New York City. 
Ransome, Frederick Leslie U. S. Geological Survey, Washington, D. C. 
Reid, H. Fielding Johns Hopkins University, Baltimore, Md. 
Remsen, Ira Johns Hopkins University, Baltimore, Md. 
Richards, Theodore W Wolcott Gibbs Memorial Laboratory, Cambridge, Mass. 
Rosa, Edward B Bureau of Standards, Washington, D. C. 
RoYCE, JosiAH Harvard University, Cambridge, Mass. 
Sargent, Charles S Arnold Arboretum, Jamaica Plain, Mass. 
ScHUCHERT, Charles Yale University, New Haven, Conn. 
Scott, William B Princeton University, Princeton, N. J. 
Smith, Alexander Columbia University, New York City. 
Smith, Edgar F University of Pennsylvania, Philadelphia, Pa. 
Smith, Erwin F Bureau of Plant Industry, Washington, D. C. 
Smith, Theobald Princeton, N. J. 
Steiglitz, J. O U niversity of Chicago, Chicago. III. 
Story, William E Clark University, Worcester, Mass, 
Thaxter, Roland Harvard University, Cambridge, Mass. 
Thomson, Elihu Swampscott, Mass, 
Trelease, William University of Illinois, Urbana, III, 
Trowbridge, John Harvard University, Cambridge, Mass. 
Van Hise, C. R University of Wisconsin, Madison, Wis. 
Van Vleck, E. B University of Wisconsin, Madison, Wis. 
Vaughan, Victor Clarence University of Michigan, Ann Arbor, Mich. 
Verrill, a. E Yale University, New Haven, Conn, 
Walcott, Charles D Smithsonian Institution, Washington, D. C. 
Webster, Arthur G Clark University, Worcester, Mass. 
Welch, William H 807 St. Paul Si., Baltimore, Md. 
Wells, Horace L Yale University, New Haven, Conn, 
Wheeler, William M Harvard University, Cambridge, Mass. 
White, David U. S. Geological Survey, Washington, D. C, 
White, Henry Seely Vassar College, Poughkeepsie, N. Y. 
Williston, Samuel Wendell University of Chicago, Chicago, III, 
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. 
Wright, Arthur W Yale University, New Haven, Conn, 
Smith, Sidney I, 
Yale University, New Haven, Conn, 
