ACKERMAN, ENS. A. A., U. S. N., _c_, Navy Department. ACKLEY, LIEUT. COMDR. S. M., U. S. N., Coast and Geodetic Survey. ADDISON, A. D., 808 Seventeenth Street. AHERN, LIEUT. GEORGE P., U. S. A., _c_, College of Montana, Deer Lodge, Mont. AHERN, JEREMIAH, U. S. Geological Survey, Los Angeles, Cal. ALLEN, DR. J. A., American Museum Natural History, New York, N. Y. ALTON, EDMUND, Wormley's Hotel. ALVORD, MAJ. HENRY E., _c_, Md. Agricultural College, College Park, Maryland. ANDREWS, ENS. PHILIP, U. S. N., Navy Department. APLIN, S. A., JR., Geological Survey. ASPINWALL, REV. J. A., 17 Dupont Circle. AYRES, MISS SUSAN C., _a_, 1813 Thirteenth Street. BABB, CYRUS C., Geological Survey. BABER, HON. GEORGE, 1416 K Street. BAKER, DR. FRANK, _a_, Smithsonian Institution. BAKER, LUCIUS, _c_, P. O. Drawer T, Fresno, Cal. {xvi} BAKER, MARCUS, _a_, Geological Survey. BALDWIN, H. L., JR., _a_, Geological Survey. BALL, CHAS. B., 942 T Street. BANCROFT, REV. DR. CECIL F. P., _c_, Phillips Academy, Andover, Mass. BARKER, COMDR. ALBERT S., U. S. N., Navy Department. BARNARD, E. C., _a_, Geological Survey. BARNES, CHARLES A., _c_, P. O. Box 1198, Seattle, Wash. BARROLL, LIEUT. HENRY H., U. S. N., _c_, Navy Department. BARTLE, R. F., 947 Virginia Avenue SW. BARTLETT, COMDR. J. R., U. S. N., _a_, Navy Department. BARTLETT, P. V. S., U. S. Geological Survey, Berkeley, Cal. BASSETT, C. C., _a_, Geological Survey. BATCHELDER, C. F., _c_, 7 Kirkland Street, Cambridge, Mass. BAUER, LOUIS A., Coast and Geodetic Survey. BAYLEY, DR. W. S., _c_, Colby University, Waterville, Me. BEAMAN, W. M., Geological Survey. BELL, A. GRAHAM, _a_, Volta Bureau, 3414 Q Street. BELL, PROF. A. MELVILLE, 1525 Thirty-fifth Street. BELL, C. J., _a_, 1406 G Street. BERGMANN, H. H., 511 Seventh Street. BERNADOU, ENS. JOHN B., U. S. N., _c_, Navy Department. BIEN, JULIUS, _a_, P. O. Box 3557, New York, N. Y. BIEN, MORRIS, _a_, Geological Survey. BIGELOW, PROF. FRANK H., 1416 K Street. {xvii} BIRCH, CHARLES E., Hydrographic Office. BIRNEY, GEN. WILLIAM, 458 Louisiana Avenue. BLAIR, H. B., _a_, Geological Survey. BLODGETT, JAMES H., _a_, 1237 Massachusetts Avenue. BLOUNT, HENRY F., 1405 G Street. BODFISH, SUMNER H., _a_, 58 B Street NE. BOURSIN, HENRY, Douglas, Alaska. BOWERS, DR. STEPHEN, _c_, Ventura, Cal. BRECKINRIDGE, GEN. J. C., U. S. A., War Department. BRIGHT, RICHARD R., Navy Department. BRITTON, A. T., 1405 G Street. BROWNELL, ERNEST H., _c_, Bristol, R. I. BUCKLEY, MISS M. L., Bureau of Pensions. BURNETT, CHARLES A., _c_, 620 Burke Building, Seattle, Wash. BURTON, PROF. A. E., _a_, Massachusetts Institute of Technology, Boston, Mass. CAMPBELL, M. R., Geological Survey. CANNON, H. B., Department of Agriculture. CANTWELL, LIEUT. J. C., U. S. R. M., _c_, 1818 Sacramento Street, San Francisco, Cal.