J 94 60ME ACCOUNT OF THE 



the fecfors in one correfponding to the vacant fpaces 

 in the other, fo that in one or other an obfervation of 

 any body vifible above the horizon, might at any 

 time be made. This point remains to be afcer- 

 tained. 



6. Between thefe two buildings and the great equa- 

 torial dial, is an inftrument called Jliamlali. It is a 

 concave hemifpherical furface, formed of mafon work, 

 to reprefent the inferior hemifphere of the heavens. 

 It is divided by fix ribs of folid work, and as many 

 hollow fpaces ; the edges of which reprefent meridians 

 at the difrance of fifteen degrees from one another. 

 The diameter of the hemifphere is twenty -feven feet 

 five inches. 



The next in point of fize and prefervation among 

 thofe which I have had the opportunitv of examining, 

 is the obfervatory at Oujein. It is fituated at the 

 fouthern extremity of the city in the quarter called 

 Jeyfingfottrah) where are ftill the remains of a palace of 

 Jayafinha^ who was loubahdar of Meliva, in the time 

 of Mahommed Shah. The parts of it are as follow : 



1. A double mural quadrant, fixed in the plane of 

 the meridian. It is a Hone wall, twenty-feven feet 

 high, and twenty-fix feet in length. The eaft fide is 

 fmooth and covered with plaifter, on which the qua- 

 drants are defcribed ; on the weft lide is a ftair, by 

 which you afcend to the top. At the top, near the 

 two corners, and at the di trance of twenty-five feet 

 one inch from one another, were fixed two fpikes ot 

 iron, perpendicular to the plane of the wall ; but 

 thefe have been pulled out. With thefe points as 

 centres, and a radius equal to their diftance ; two arcs 

 of 00 degrees are defcribed interfering each other. 

 Thefe are divided in the manner reprefented in the 

 margin. One divifion in the upper 

 circle is equal to fix degrees ; in the 



fecond 



