The celestial globe contains the figures of the several constellations exquisitely drawn, the name of each being given in Latin, in Arabic, and in Greek. One finds on this globe but the one short legend reading “Stella praeclara et peregrina Anno D. 1572 et per annum et quatuor menses, scilicet a principio Novvemb. usque ad ultimum Martii 1573.” “A very bright and wandering star (appearing) in the year 1572 and for one year and four months, visible from the first of November to the last of March 1573.” Another fine pair of Moroncelli’s manuscript globes, constructed in the year 1716, is to be found in the Biblioteca Casanatense of Rome. They have each a diameter of about 160 cm. and are mounted on plain octagonal bases. The terrestrial has a graduated meridian of brass, a horizon circle of wood, likewise graduated and having indicated on its surface the several signs of the zodiac, the names of the months, and of the principal winds. On the surface of the globe, the parallels and the meridians are drawn at intervals of five degrees, the prime meridian passing through the most western island of the Canaries. The address to the reader, like that on the globe in the Alessandrian Library, is practically a copy of the one to be found on the Greuter globe of the year 1632. A lengthy legend relating to the prime meridian reads: “Ut recta methodo ad cognitionem Geographie deveniamus, Principium desumere a pᵒ Meridiano, a quo longitudo habetur, debemus. Unde sic. Quamvis igitur Longitudinis initium arbitrarium sit, ab occasu tamen ejus auspicium facere ideo Veteribus placuit quod illic aliquis Terre limes esset inventus qui Ortum versus nullus expeditionibus deprehendi potuisset atque eam ob causam Ptolemeus cujus sedulitati ac industriae Geographie incolumitatem omnes vel inviti debent ab ultimo termino Occidentis cognito que Insule in Atlantico mari Fortunate olim dicte nunc Canariae vocantur auspicium fecit. In iisque Primum meridianum defixit quod theticum principium deinceps fere omnes ejus auctoritate moti retinuerunt. Nunnulli quidem Seculo transacto principium tenendum censuere ubi Acus Magneti junctae recta in boream spectat: Sed multum inter se dissentientes allucinantur. Nos autem Ptolomei vestigiis insistentes easdem Insulas delegimus et Lineam meridionalem in Insula De Ferro dicta que de Fortunatis ut olim et de Canariis nunc, una de Principalibus est fiximus.” “That we may come to the right method for acquiring a knowledge of geography we must make a beginning from the first meridian from which longitude is reckoned. Although the beginning of longitude is arbitrary it pleased the ancients to make this beginning from the west because there was found a limit of the earth which could not be found by voyages toward the east. For this reason Ptolemy, to whose application and industry all men owe the preservation of geography though grudgingly, made the beginning from the farthest known bounds of