Prof. T. STEREY HUNT, LL. D., Mass. Inst. of Technology, Boston. BOCKS. EOSSITEB JOHNSON. KnBlNSON, E/.EKIEL GlLMAN, ROCHESTER, N. Y., HOBBLING. JOHN AUGUSTUS, and other articles ID biography and geography. Prof. C. A. JOY, Ph. D., Columbia College, New York. RUBIDIUM, RUTHENIUM, and other chemical articles. Most Rev. FRANCIS PATRICK KENRIOK, D. D., late Archbishop of Baltimore. hi >MAN CATHOLIC CHCBCH. Prof. S. KNEELAND, M. D., Mass. Inst. of Technology, Boston. KADI AT A, REPTILES, SALMON, SEAL, SHARK, SllKKP, and other articles In zoology. CHARLES LINDSEY, Toronto, Canada. > UM LAWRENCE RIVER. SASKATCHEWAN. T. J. LOWRY, U. S. Coast Survey, San Fran- cisco, Cal. PROTRACTOR. SKXTANT. Capt. S. B. LUCE, U. S. N., U. 8. Navy Yard, Boston. ROPE (In part). SHIP (In part). Prof. BENJAMIN W. MCCREADY, M. D., Belle- vue Hospital Medical College, New York. RHEUMATISM. SCROFULA. Prof. ALFRED M. MAYER, Stevens Inst. of Tech- nology, Hoboken, N. J. PYROMETER. DAVID J. MILLER, Santa F6, New Mexico. SANTA Ffi. Rev. FRANKLIN NOBLE. ROOERR, JOHN (sculptor), SCIIOOLTRAIT, HENRY ROWR, BIIEDD, WILLIAM GRKENOUGH THATER, and other articles in blofrraphy and geography. Rev. BERNARD O'REILLY, D. D. QUEBEC (dtv), RELIGIOUS oiniKK*. Roman Catholic, SCHOOL BROTHERS AND SCHOOL SISTERS, and other articles In ecclesiastical history. Prof. S. F. PECKHAM, University of Minnesota. RED RIVER or THE NORTH. RESINS. SALT. RICHARD A. PROCTOR, A.M., London. SATURN, and other astronomical articles. PENNOCK PPSEY, St. Paul, Minn. SAINT PAUL. A. A. PUTNAM, Salt Lake City, Utah. SALT LAKE CITY. Prof. C. V. RILKY, State Entomologist, Si Louis, Mo. ROCKY MOUNTAIN LOCTTBT. R. V. ROGERS, St. Augustine, Fla. SAINT AUGUSTINE. I. C. ROSSE, M. D., Washington, D. 0. QUARANTINE. Prof. PHILIP SCHAFF, D. D., Union Theological Seminary, New York. REFORMATION. REFORMED CHURCH (in part). Prof, A. J. SCHEM. PRUSSIA (in part), REFORMED CHURCH IN THE UNITED STATES, RELIGIOUS ORDERS, Protestant, SECOND ADVENTISTS, and various articles in geography and history. J. G. SHEA, LL. D. PUEBLO INDIANS, SEMINOLES, SEN EC AS, BHAWNEES, and other articles on American Indians. Prof. HENRY B. SMITH, D. D., Union Theologi- cal Seminary, New York. REFORMED CHURCH (in part). SCHILLING, FRIEDRICII WILUELM JOSEPH VON. Prof. J. A. SPENCER, D. D., College of the City of New York. RAWLINSON, GEORGE. ROSE, HUGH JAMES. ROSE, HENRY JOHN. SEABURY, SAMUEL (two). W. L. STONE, Editor of " New York School Journal." 1: 1 1. JACKET. RIEDESEL, Kitir.mtici! APOLPH VON, Baron. RIEDESEL, FRIEUEKIKK CHARLOTTE. SARATOGA. FRANCIS A. TEALL. ROLAND DK LA PI.ATIKUE. JEAN MARIE and MARIE, RUTLEDGE, JOHN and EDWARD, BouraoBM, SEVERUS, Lucius SEPTIMIUS, and other articles in biography and history. N. L. THIEBLIN. RUSSIA (in part). Prof. GEORGE TIIURBEB. QUINCE, RHODODENDRON, SEQUOIA, and other botanical articles. Prof. ROBERT II. THURSTON, Stevens Inst. of Technology, Hoboken, N. J. ROOF. JOHN F. UIILHORN, Sacramento, Cal. SACRAMENTO. W. A. VAN BENTHUYSEN, Editor of the "Shoe and Leather Chronicle," New York. Prof. G. A. F. VAN RIIYN, Ph. D. PROVENCAL LANGUAGE AND LITERATURE, PYRAMID, Bmnfc SEMITIC RACE AND LANGUAGES, and other archa-ologicaL, oriental, and philological articles. J. M. VARNUM, Secretary Board of Trade, St. Joseph, Mo. SAINT JOSEPH. Major W. T. WALTHALL, Mobile, Ala. SELMA. C. S. WEYMAN. RAPHAEL. SCOTT, fir WALTER. SCULPTURE. RICHARD GRANT WHITE. SHAKESPEARE. Prof. W. D. WHITNEY, LL. D., Yale College, New Haven, Conn. SANSKRIT. Gen. JAMES HARRISON WILSON. RAILROAD. ROCKET.