ASTRONOMICAL LABOURS OF JAYASINIIA. \Qb 



fecond one degree, (the extent contained in the 

 fpecimens) in the third fix minutes, and in the fourth 

 one minute. One of thefe arcs ferves to obferve the 

 altitude of any body to the north, and the other of any 

 body to the fouth of the Zenith^ but the arc which 

 has its centre to the fouth, is continued to the fouth- 

 ward beyond the perpendicular, and its centre about 

 half a degree, by which, the altitude of the fun, can 

 at all times be taken on this arc. With this instru- 

 ment Jayafinha determined the latitude of Oujcin to be 

 23° 10' N. 



Suppoling the latitude, here meant, to be (as is 

 moll probable) that of the obfervatory, I was anxious 

 to compare it with the refult of my own obfervations 

 (Afiatick Refearches, vol. IV. p. 150. 152.) and, for 

 that purpoie, I made an accurate meafurcment from 

 our camp, at Shah Dawul's durgah, to the mural 

 quadrant of the obfervatory. I found the fouthing of 

 the quadrant from our camp to be one mile 3.Q fur- 

 longs, which makes l' 17" difference of latitude. 



The latitude of the camp, by medium 

 of two obfervations, of the fun is 23° 1 1' 54" 



Deduced from the medium of fix ob- 

 fervations of fixed ftars, taken at Raxa 

 Khan's garden, at different latitude 

 7" S. 23 11 45 



From obfervation of the fun at the 

 fame place 23 11 37 



From two obfervations of ocw», taken 

 at the houfe in town, at different lati- 

 tude 32" S. 23 1 1 28 



164 

 Latitude of Shah DawuTs durgar, by 

 medium of all obfervations 23 11 -41 



Difference of latitude, camp and ob- 

 fervatory 1 17 

 Gives the latitude of the obfervatory 23 10 24 



A cloier 



