Lea Bros. & Co. (Philada) announce the publication of the new _National Dispensatory_ on January 25th. The J. B. Lippincott Co. had advertised the appearance of their new _U. S. Dispensatory_ for January 15th, but some delay has apparently been caused, and the book will not appear until the middle of February. There will be greater rivalry than ever before between these two books; but each has its special features, and both are valuable—so that the careful student will do well to procure both volumes. The information in one will often amplify the other, and neither volume alone contains all the knowledge we possess—and ought to have at command—regarding drugs and materia medica. PUBLICATIONS RECEIVED. The Present Condition of Otology in Europe. By LAWRENCE TURNBULL, M. D., of Philadelphia. Reprint, 1893. The Relief of Chronic Deafness, Tinnitus Aurium and Tympanic Vertigo, by Removal of the Incus and Stapes. By CHARLES H. BURNETT, M. D., of Philadelphia. Reprint, 1893. Some Observations on Treating Cases of Diphtheria. By G. BENSON DUNMIRE, A. M., M. D., of Philadelphia. Reprint, 1893. A Case of Tumor of the Optic Thalamus. By WHARTON SINKLER, M. D., of Philadelphia. Reprint, 1893. Pathology and Treatment of Paralysis from Pott’s Disease. By WHARTON SINKLER, M. D., of Philadelphia. Reprint, 1893. Syringo Myelia. By WHARTON SINKLER, M. D., of Philadelphia. Reprint, 1893. Hysterectomy: Indications and Technique. By J. M. BALDY, M. D., of Philadelphia. Reprint, 1893. Removal of the Uterus and Its Appendages for Pelvic Inflammatory Disease. By J. M. BALDY, M. D., of Philadelphia. Reprint, 1893. A Few Thoughts About Ophthalmometry, as to What the Javal Instrument Will Do, and What It Will Not Do. By LOUIS J. LAUTENBACH, A. M., M. D., of Philadelphia. Reprint, 1893. Epiphora or Watery Eye. By L. WEBSTER FOX, M. D., of Philadelphia. Reprint, 1893. Phlyctenular Conjunctivitis, with Special Reference to the Pathology and Prophylaxis of the Disease. By LOUIS J. LAUTENBACH, A. M., M. D., of Philadelphia. Reprint, 1893. Phthisis: A New Method of Treatment. By HENRY S. MORRIS, M. D., of New York. Reprint. 1893. Extract of Malt and Its Combinations. By J. J. MULHERON, M. D., of Detroit, Mich. Reprint, 1893. The Measured Effects of Certain Therapeutic Agents, etc. By D. D. Stewart, M. D., of Philada. Reprint, 1893. The Successful Treatment of Anæmia, with Effect Shown by Increase of Red Corpuscles and Haemoglobin. By H. P. Loomis, M. D., of New York. Reprint, 1893. Miscellany. METRIC EQUIVALENTS.—The metric nomenclature is coming into such common use, especially in scientific articles, that the following formulas will be found valuable: