HASKELL, E. E., _a_, Coast and Geodetic Survey. HAWKINS, GEO. T., Geological Survey. HAY, PROF. ROBERT, P. O. Box 562, Junction City, Kans. HAYDEN, EVERETT, _a_, Hydrographic Office. HAYDEN, J. J., 929 K Street. HAYES, DR. C. WILLARD, Geological Survey. HAYES, PROF. ELLEN, _c_, Wellesley College, Wellesley, Mass. HAYS, J. W., Oxford, N. C. {xxiii} HAZARD, DANIEL L., Coast and Geodetic Survey. HEATON, A. G., 1618 Seventeenth Street. HEILPRIN, GILES F., 1227 Pennsylvania Avenue. HENRY, A. J., _a_, 948 S Street. HENSHAW, H. W., _a_, Bureau of Ethnology. HERRLE, G., _a_, Hydrographic Office. HERRON, WM. H., _a_, Geological Survey. HILL, PROF. R. T., 910 Fifteenth Street. HINDS, DR. CLARA BLISS, 1331 Fourteenth Street. HINMAN, RUSSELL, 806 Broadway, New York, N. Y. HITCHCOCK, PROF. C. H., _c_, Dartmouth College, Hanover, N. H. HOBBS, DR. WM. H., _c_, University of Wisconsin, Madison, Wis. HODGKINS, PROF. H. L., _a_, Columbian University. HODGKINS, W. C., Coast and Geodetic Survey. HOLDEN, PROF. E. S., _c_, Lick Observatory, Mount Hamilton, Cal. HOLDEN, MRS. L. E., P. O. Box 1027, Salt Lake, Utah. HOLDEN, LUTHER L., 7 Warren Square, Jamaica Plain, Mass. HOLLERITH, HERMAN, 501 F Street. HOLMES, PROF. J. A., _c_, Chapel Hill, N. C. HOLT, H. P. R., Takoma Park, D. C. HORE, CAPT. EDWARD C., _c_, Royal Geographical Society, London, England. HORNADAY, W. T., _a_, 44 Niagara Street, Buffalo, N. Y. HORNBLOWER, J. C., 1402 M Street. HOSKINS, PROF. L. M., _c_, University of Wisconsin, Madison, Wis. {xxiv} HOSMER, EDWARD STURGES, _l_, 1330 L Street. HOTCHKISS, MAJ. JED., Staunton, Va. HOVEY, REV. DR. H. C., 60 Crescent Street, Middletown, Conn. HOWARD, ENS. W. L., U. S. N., _c_, Navy Pay Office, San Francisco, Cal. HOWELL, D. J., _a_, 918 F Street. HOWELL, EDWIN E., _a_, 612 Seventeenth Street. HUBBARD, GARDINER G., _a_, 1328 Connecticut Avenue. HUTCHINSON, JOHN, 933 H Street. HUTCHINSON, W. J., 1707 Massachusetts Avenue. HYDE, G. E., Geological Survey. HYDE, JOHN, 2820 P Street. IARDELLA, C. T., _a_, Coast and Geodetic Survey. INGRAHAM, PROF. E. S., _c_, Seattle, Wash. JACKSON, REV. DR. SHELDON, 1830 Ninth Street. JENNEY, DR. W. P., Geological Survey. JENNINGS, J. H., _a_, Geological Survey. JEWETT, W. P., _c_, 180 E. Third Street, St. Paul, Minn. JOHNSON, MISS ALICE BURGES, 501 Maple Avenue. JOHNSON, A. B., _a_, Light House Board. JOHNSON, E. KURTZ, 1600 Massachusetts Avenue. JOHNSON, DR. H. L. E., 1400 L Street. JOHNSON, J. B., Howard University. JOHNSON, REV. J. G., 381 Dearborn Avenue, Chicago, Ill. JOHNSON, JEROME F., 1326 F Street. {xxv} JOHNSON, MRS. MARY DAVIS, _c_, Sitka, Alaska. JOHNSON, STUART P., U. S. Geological Survey, Berkeley, Cal. JOHNSON, WILLARD D., _a_, U. S. Geological Survey, Berkeley, Cal. JUDD, JOHN G., 420 Eleventh Street.