8; -ASTRONOMICAL OBSERVATIONS 



10 



1784, The Latitude obferved by T. D. P. (fee ob- 

 fervations at large) was 



15.29.16 



This is inferted only to bring to teft the accuracy of 

 the octant, which is mentioned (page 58) in the Intro- 

 duction : and it appears that, by a fingle obfervation 

 made with it, the Latitude was determined within i\8". 



It ferves alfo to fhew that, though it is very difficult 

 to take double altitudes of fo faint a (tar, in low lati- 

 tudes, even the polar ftar may be ufed to great advan- 

 tage : and in thefe hot climates the ftars only can be 

 employed, for the Sun's heat at noon, after a long 

 march, is really not to be borne by any conftitution. 



MASULIPATAM, 1782, byT.D.P. 



27th OB. diameter forward 33, 1 Jj£ 2ft£?!K 



back ward, 3 2, J dex back. 



Double altitudes of the Sun's lower limb, taken with 

 the Hadley's octant and the artificial horizon. 



Obferved 



