U Tail of the dragon (Cauda Draconis), for measuring eclipses of the earth and of the moon; V Third chapter ring, with degrees of lunar latitude and some fixed stars; W Fourth chapter ring, showing firmament of fixed stars, signs of the zodiac and degrees of the signs, the months of the year, and days of the months, revolving left to right for the course of a mean astronomical year; X Adjustment marked _Claudit_ (it closes) and _Aperit_ (it opens) for disengaging dial work for the purpose of making astronomical experiments and computations; Y Adjustment marked _Concitat_ (it accelerates) and _Retardit_ (it retards) for fast and slow adjustments of the movement. In the upper spandrels of the dial are two more cherubs bearing ribands with inscriptions. In the lower left corner is a magnificent engraving of Atlas upholding the globe of the world, inscribed with the zodiac, over his head. The lower right corner features the figures of two noblemen apparently examining and discussing an orb upon a table, the significance of which is not clear. [Illustration: Figure 12.--EMPRESS MARIA THERESA, to whom Father Borghesi is stated to have presented his two astronomical clocks. The coin bearing her portrait is in the Museum of History and Technology.] THE INSCRIPTIONS Beginning with the uppermost part of the frontispiece, there are nine inscriptions in Latin on the dial plate. The topmost is _Franciscvs I sit plan. Dominator aeternvs._ The phrase has reference to Francis I, who was Emperor of the Holy Roman Empire, from 1745-1765, and husband of Empress Maria Theresa of Austria. The phrase may be translated as "May Francis I be the eternal ruler by favor of the planets" or more simply "Long Live Francis I, Emperor."[14] Although the dial plate of the Borghesi clock is inscribed with his name, the records indicate that the clock was presented to Maria Theresa. Francis I may have already died before the presentation was made. [Illustration: Figure 13.--PORTRAIT OF FRANCIS I, Emperor of the Holy Roman Empire, to whom Father Borghesi's astronomical clock in the Museum of History and Technology appears to have been inscribed.] From the left to right over the tableau of the Holy Trinity is the phrase "Lavs sacrosanctae Triadi Vni Deo, et Deiparae" (Praise [be] to the most Holy Trinity, to the one God, and to the Mother of God). Within the upper left and right spandrels is inscribed: Isthaec, Signum grande apparvit in Coelo * sancta Dei genitrix amicta sole * Illibato pede Lvnae et serpentis nigra premens Cornva * bis senis pvlcherrime Coronata syderibvs * Tempe indesinenter clavsa, scatvrigo signata * Cedrvs in Libano, Cypresvs in Monte Sion * Mater pvrae Dilectionis sanctaeqve spei * Chara patris aeterni proles, Verbi Mater, sponsaqve procedentis *, gratiae et gloriae circvmdata varietate.