the Bramin’s Obfervatory at Benares. 603, 
^Wigure c is a brafs circle, about two feet diameter, 
moving vertically upon two pivots between two ftone 
pillars, having an index or hand turning round horizon- 
tally on the center of this circle, which is divided into 
360 parts; but there are no counter divifions on the 
index to fub-divide thofe on the circle. This inftrument 
appears to be made for taking the angle of a ftar at fet- 
ting or rifing, or for taking the azimuth or amplitude of 
the Sun at riling or fetting. 
The ufe of the inftrument, figure D, I was at a lofs to 
account for. It confifts of two circular Walls ; the outer 
of which is about forty feet diameter, and eight feet 
high; the wall within about half that height, and ap- 
pears intended for a place to ftand on to obferve the divi- 
fions on the upper circle of the outer wall, rather than 
for any other purpofe ; and yet both circles are divided 
into 360 degrees, each degree being fob-divided into 
twenty lefler divifions, the fame as the quadrants. There 
is a door-way to pafs into the inner circle, and a pillar in 
the center, of the fame height with the lower circle, 
having a hole in it, being the center of both circles, and 
feems to be a focket for an iron rod to be placed perpen- 
dicular into it. The divifions on thefe, as well as all the 
other inftruments, will bear a nice examination with a 
pair of compafles. 
4 I a 
Figure 
