ASTRONOMICAL LABOURS OF JAYASIXHA. J07 



2. On the top of the mural quadrant is a fmall pil- 

 lar, the upper circle of which being two feet in dia- 

 meter, is graduated for obferving the amplitude of the 

 heavenly bodies, at their rifing and fetting ; it is 

 called A?ra Yunter. The circles. on it are very much 

 effaced. 



3. About the middle of the wall the parapet -to the 

 eafhvard is increafed in thicknefs, and on this part is 

 confirucled a horizontal dial called Puebha Yunter. 

 Its length is two feet four inches and a half, but the 

 divilions on it are almolt totally effaced. 



A Dig anfa Yunter ', a circular building, ll6 feet 

 in circumference. It is now roofed with tiles, and 

 converted into the abode of a Hindu deity, {o that I 

 could not get accefs to examine its conftruction ; but 

 the following account of it is delivered in the Set?i rat 

 Siddhanta, an aftronomical work compofed under the 

 infpedtion of Jayafinha. 



On a horizontal plane defcribe the three concentric 

 circles ABC, and draw the north, fouth, eaft, and 

 weit lines, as in the figure. Then, on A build a 



folid 



