8 CHILINDRES OR PILLAR DIALS 



ranean peoples. One of the earliest treatises upon it by an Englishman 

 is the Practica chilindri, written by John Hoveden, Chaplain to Queen 

 Eleanor the mother of King Edward. 



The editor and translator of the treatise, Edmund Brock, makes out 

 that the particular chilindre described was made for latitude 51 56', 

 which was probably intended for the latitude of Oxford. This surmise 

 is supported by another Bodleian MS. entitled ' Composicio chilindri 

 cum ejus operacione que facta est apud Oxoniam' MS. Digby 98 

 from which we gather that there must have been competent dial 

 makers in the City at that early date. 



31. ' Column ', pillar ', or ' Shepherd's dial '. i?th cent. 



O. C. XXX Ashmolean Museum. 



The dial forms part of the bone handle of Absalom Leech's Walking 

 Stick and measuring rod. 



A hinged gnomon (now missing) is brought over the proper month as 

 indicated by the vertical lines. The stick, held upright, is then turned 

 until the shadow of the gnomon falls vertically on the column. The 

 position of the point of the shadow with reference to the oblique hour 

 lines will then indicate the time. 



32. Column Dials. igth cent. 



Pitt- Rivers. 



Until recently such column dials were in common use in the 

 Pyrenees. 



ARMILLARY SPHERE 



33. Ptolemaick Armillary Sphere. c. 1595. 



Bronze. 2 feet in diameter. Bodleian Library. 



Supported by three lions sitting on a triangular base, engraved with 

 the coat of arms and quarterings, crest, and badge of Henry, ninth Earl 

 of Northumberland (1564-1632). 



According to the Benefactor's Book it was presented tothe Bodleian 

 Library by Sir Josias Bodley in 1601, with four other instruments, three 

 of which have disappeared. 



34. Universal Astronomical Ring Dial. 



Brass. Pitt-Rivers. 



35. Universal Astronomical Ring Dial. 



Diameter 3 inches. Silver. Gunther Coll. 



By Butterfield, Paris. 



