Now, the sun is always to the southward of you as you are anywhere north of the equator. At noon, the sun is practically due South. At that hour, both hands of your watch are together on the figure 12 and the hour hand pointing at the sun points in that direction. At 6 a.m. the sun is nearly East, so if the hour hand, now on the figure 6 is pointed eastward toward the sun, then South would be in a line just over the figure 9. At 6 p.m., the sun being in the west and the hour hand pointed at it, South would be half-way back toward the figure 12, or just over the figure 3. For other morning or afternoon hours, the same reasoning holds true. APPENDIX B _Bibliography_ ADJUSTING, PRACTICAL COURSE IN—Theo. Gribi. Jewelers' Circular Publishing Company, New York City, 1901. AMERICAN CLOCKMAKING—ITS EARLY HISTORY—Henry Terry. J. Giles & Son, Waterbury, Connecticut, 1870. AMERICAN WATCHMAKER AND JEWELER, THE—(An encyclopedia.) H. G. Abbott. Geo. K. Hazlitt & Co., Chicago, Illinois, 1891. AMERICAN WATCHMAKER AND JEWELER—J. Parish Stelle. Jesse Haney & Co., New York City, 1868. Revised Edition, 1873. ANCIENT AND MODERN TIMEKEEPERS—Reprint from Harper's Magazine, July, 1869. Albert D. Richardson. ANNUAIRE SUISSE (de l'horlogerie et de la bijouterie)—Supplement gratuit—de l'Annuaire du commerce suisse. Geneva, Switzerland, 1912. ARTIFICIAL CLOCKMAKER, THE—(Fourth edition with large emendations.) Wm. Derham. James, John and Paul Knapton, London, England, 1734. AUSFÜHRLICHE GESCHICHTE DER THEORETISCH-PRAKTISCHEN UHRMACHERKUNST SEIT DER ALTESTEN ART DEN TAG EINZUTHEILEN BIS AN DAS ENDE DES ACHZEHNTEN JAHRHUNDERTS—Johann Heinrich Moritz Poppe, Roch und Compagnie. Leipzig, Germany, 1801. AVIS SUR LE PRIVILÉGE DES HORLOGES ET DES MONTRES DE LA NOUVELLE INVENTION—J. de Hautefeuille, Paris, France. CLOCK AND WATCHMAKERS' MANUAL—M. L. Booth. John Wiley, New York City, 1860. CLOCK AND WATCHMAKERS' MANUAL, NEW AND COMPLETE—Mary L. Booth. J. Wiley, New York City, 1860. CLOCK AND WATCHMAKING, RUDIMENTARY TREATISE ON—E. B. Denison (Lord Grimthorpe). John Weale, London, England, 1850. CLOCK AND WATCHMAKING, TREATISE ON—Thomas Reid. Blackie and Son, London, England, 1849. CLOCK AND WATCH REPAIRING, ESSENTIALS OF—John Drexler, Milwaukee, Wisconsin, 1914. CLOCK AND WATCH WORK—From the Eighth Edition of the Encyclopedia Britannica—Sir Edmund Beckett. Adam and Charles Black, 1855. CLOCKJOBBER'S HANDYBOOK, THE—Paul N. Hasluck. Crosby Lockwood and Son, London, England, 1899. CLOCK, WATCHES AND BELLS—Sir Edmund Beckett. (Sixth edition Revised and Enlarged.) Lockwood & Company, London, England, 1874. CLOCKWORK, ESSAYS ON THE IMPROVEMENT OF—Alexander Cumming, London, England, 1766.