NATTER, E. W. F. (Ernst Wilhelm Franz), Geological Survey. 474 Pennsylvania Avenue. NELL, LOUIS, _a_., Geological Survey. 1118 Virginia Avenue SW. NILES, W. H., Massachusetts Institute of Technology, Boston, Mass. NORDHOFF, CHARLES, _a_., 1731 K Street. OGDEN, H. G. (Herbert Gouverneur), _a_., Coast and Geodetic Survey. 1324 Nineteenth Street. PARSONS, F. H. (Francis Henry), _a_., Coast and Geodetic Survey. 210 First Street SE. PATTON, PRES. W. W. (William Weston), _a_., Howard University. 425 College Street. PEALE, DR. A. C. (Albert Charles), _a_., Geological Survey. 1446 Stoughton Street. PERKINS, E. T., JR. (Edmund Taylor), _a_., Geological Survey. 1831 F Street. PENROSE, R. A. F., Austin, Texas. PETERS, LIEUT. G. H. (George Henry), U. S. N., _a_., Navy Department. PETERS, W. J. (William John), _a_., Geological Survey. 1831 F Street. PIERCE, JOSIAH, JR., Geological Survey. 1829 G Street. POWELL, MAJOR J. W. (John Wesley), _a_., Geological Survey. 910 M Street. POWELL, PROF. WM. B. (William Bramwell), _a_., Franklin School Building. 1729 Twelfth Street. PRENTISS, DR. D. W. (Daniel Webster), _a_., 1101 Fourteenth Street. RENSHAWE, JNO. H. (John Henry), _a_., Geological Survey. 1121 I Street. RICKSECKER, EUGENE, _a_., Seattle, Washington Territory. RILEY, DR. C. V. (Charles Valentine), _a_., Department of Agriculture. 1700 Thirteenth Street. RITTER, H. P. (Homer Peter), _a_., Coast and Geodetic Survey. 1125 Seventeenth Street. ROBERTS, A. C. (Arthur Carr), _a_., Hydrographic Office. RUSSELL, I. C. (Israel Cook), _a_., Geological Survey. 1754 Corcoran Street. SARGENT, PROF. C. S. (Charles Sprague), _a_., Brookline, Massachusetts. SCHLEY, COM. W. S. (Winfield Scott), U. S. N., _a_., Navy Department. 825 Vermont Avenue. SCUDDER, SAM. H. (Samuel Hubbard), _a_., Cambridge, Massachusetts. SHALER, PROF. N. S. (Nathaniel Southgate), _a_., Cambridge, Massachusetts. SIEBERT, J. S. (John Selmar), Hydrographic Office. 330 Spruce Street, Le Droit Park. SMITH, EDWIN, _a_., Coast and Geodetic Survey. 2024 Hillyer Place. SMITH, MIDDLETON, _a_., Army Signal Office. 1616 Nineteenth Street. SOMMER, E. J. (Ernest Julius), _a_., Coast and Geodetic Survey. 330 A Street SE. STEIN, ROBERT, Geological Survey. STEJNEGER, LEONHARD, _a_., National Museum. STOCKTON, LT. COMDR. C. H. (Charles Hubert), U. S. N., _a_., Navy Department. 1828 I Street. SUTTON, FRANK, Geological Survey. 938 K Street. THOMAS, MISS MARY VON E. (Mary von Erden), _a_., Coast and Geodetic Survey. 229 New Jersey Avenue SE. THOMPSON, PROF. A. H. (Almon Harris), _a_., Geological Survey. THOMPSON, GILBERT, _a_., Geological Survey. 1448 Q Street. THOMPSON, LAURENCE, _a_., Box 380, Seattle, Washington Territory. THOMPSON, LIEUT. R. E. (Richard Edward), U. S. A., _a_., War Department. 2011 N Street. TITTMANN, O. H. (Otto Hilgard), _a_., Coast and Geodetic Survey. 1019 Twentieth Street.