JOSS JUNOT, ANDOCHE JOST, ISAAK MARKUS JUNOT, LAURE JOTUNHEIM JUNTA JOUBERT, BARTHÉLEMY CATHERINE JUPITER (Roman deity) JOUBERT, JOSEPH JUPITER (planet) JOUBERT, PETRUS JACOBUS JUR JOUFFROY, JEAN JURA (department of France) JOUFFROY, THÉODORE SIMON JURA (island) JOUGS JURA (mountains) JOULE, JAMES PRESCOTT JURASSIC JOURDAN, JEAN BAPTISTE JURAT JOURNAL JURIEN DE LA GRAVIÈRE, JEAN EDMOND JOURNEY JURIEU, PIERRE JOUVENET, JEAN JURIS JOUY, VICTOR JOSEPH ÉTIENNE DE JURISDICTION JOVELLANOS, GASPAR MELCHOR DE JURISPRUDENCE JOVELLAR Y SOLER, JOAQUIN JURISPRUDENCE, COMPARATIVE JOVIAN JURJANI JOVINIANUS JURY JOVIUS, PAULUS JUS PRIMAE NOCTIS JOWETT, BENJAMIN JUS RELICTAE JOYEUSE JUSSERAND, JEAN ADRIEN ANTOINE JULES JOYEUSE ENTRÉE JUSSIEU, DE JUAN FERNANDEZ ISLANDS JUSTICE JUANGS JUSTICE OF THE PEACE JUAN MANUEL, DON JUSTICIAR JUAREZ, BENITO PABLO JUSTICIARY, HIGH COURT OF JUBA (kings of Numidia) JUSTIFICATION JUBA (African river) JUSTIN I. JUBBULPORE JUSTIN II. JUBÉ JUSTIN (Roman historian) JUBILEE (or Jubile), YEAR OF JUSTINIAN I. JOINTS, in anatomy. The study of joints, or articulations, is known as Arthrology (Gr. [Greek: arthron]), and naturally begins with the definition of a joint. Anatomically the term is used for any connexion between two or more adjacent parts of the skeleton, whether they be bone or cartilage. Joints may be immovable, like those of the skull, or movable, like the knee. [Illustration: FIG. 1.--Vertical section through a synchondrosis. b, b, the two bones; Sc, the interposed cartilage; l, the fibrous membrane which plays the part of a ligament.] [Illustration: FIG. 2.--Vertical section through a cranial suture, b, b, the two bones; s, opposite the suture; l, the fibrous membrane, or periosteum, passing between the two bones, which plays the part of a ligament, and which is continuous with the interposed fibrous membrane.]