ASTRONOMICAL LABOURS OF JAYASINHA, 20i 



2. On the top of this inftrument is a fhort pillar, 

 on the upper furface of which is an amplitude inilru- 

 ment (like that defcribed No. 2, Oujein obfervatory, 

 called Agra-yunter) ; but it is only divided into oc- 

 tants. Its diameter is two feet five inches. 



3. On the level of the terrace is another amplitude 

 inftrument, divided into iixtV-equal parts. Its dia- 

 meter is only thirteen inches. 



4. On the fame terrace is a circle, in the plane of 

 the horizon, with a gnomon limilar to that of a hori- 

 zontal dial,, but the divisions are equal; and of fix de- 

 grees each. It mult therefore have been intended for 

 fome other purpole than the common horizontal dial, 

 tinlefs we may conceive it to have been made bv fome 

 peribn who was ignorant of the true principles of that 

 initrument. This could not have been the cafe with 

 Jayafinha and his astronomers ; but the initrument has 

 fome appearance of being of a later date than molt of 

 the others : they are all of Itone or brick, plaiftered 

 with lime, in which the lines and figures are cut ; and 

 the plailter of this initrument, though on the level of 

 the terrace, and consequently more expofed to acci- 

 dents than the others, is the freiheft and . moft entire 

 of all. 



5. On the eaft wall, but facing wefhvard, is a icg- 

 metxt, exceeding a femicircle, with the arch down- 

 wards. It is divided into two parts, and each of thefe 

 into fifteen divilions. Its diameter is four feet. On 

 the weft wall, facing eaft wards, is a funilar legmen t, 

 iyith the arch upwards, divided in the fame way as the 

 former. Its diameter is feven feet nine inches. 



The obfervatorv at Benares having: been defcrflbed 

 bv Sir Robert Barker, and Mr. Willi a:* s, I 



' Vol. V. N' have 



