391 



SECTION 11. ASTBONOMY, 



WEST GALLERY, GROUND FLOOR, ROOM L. ; AND THE TER- 

 RACE OVERLOOKING THE HORTICULTURAL GARDENS. 



I. INSTRUMENTS FOR DETERMINING THE PLACES 

 AND MOTIONS OF THE HEAVENLY BODIES. 



a. ASTROLABES. 



1752. Suspension Astrolabium. A very old astronomical 

 instrument made in 1525. Prof. Buys-Ballot, Utrecht. 



1752a. Astrolabe, date 1374. This instrument affords one 

 of the oldest illustrations of the use of Arabic numbers. 



A. C. Baldwin. 



1752a. Ancient Astrolabe, by Petrus Raimondi, 1375. 



A. C. Baldwin. 



This instrument is 4 inches in diameter, with five interchangeable discs, 

 astronomical circles, and two pointers. On the back, a zodiacal calendar. 

 Hound the edge is the inscription, " + hoc astralabium : fuit factum : ct cum 

 armillis verifficatum Barghinone : anno Xri 1375. per Petrum Raimbdi de 

 domo regis Aragonum : lati Barghinone : 41 longi 39." 



1753. Astrolabe, constructed for Sir Francis Brake, 



prior to his first expedition to the West Indies in 1570. 



Royal Naval Museum, Greenwich. 



This instrument is said to have been preserved in the Stanhope family till 

 1783. It was subsequently presented to King William IV., who in 1833 

 deposited it in Greenwich Hospital. 



1754. Astrolabe. Ivory, mounted with gilt ormolu. A figure 

 of the Creator is engraved outside. It still retains the original 

 compass and needle. Nuremburg. Dated 1585. 



Rev. J. C. Jackson. 



1754a. Ancient Astrolabe, supposed to have belonged to 

 the Spanish Armada. Robert J. Lecky, F.R.A.S. 



This instrument was found under a rock in the island of Valencia, Ireland, 

 1845, within view of the place where three vessels of the Spanish armada 

 were wrecked, and from the style of its finish and workmanship is supposed 

 to have belonged to one of them. 



