Trigonometrical Survey. 665 



Art. xxxvii. Latitudes and Longitudes of some remarkable Places, 

 not contained in the preceding Tables. 



St. Nicholas's or Drake's Island, in Plymouth Sound. 



The bearing of Kit Hill, from the meridian of Butterton, is 

 6y° 12' 12", and the angle between it and the flagstaff on 

 Drake's Island, 41 40 8" ; therefore, the bearing of the latter 

 from the meridian is 71 7' 4,0" ; consequently, its distance from 

 the meridian is 60531 feet, and from the perpendicular 20692 

 feet, which respectively subtend 9' 53"6, and 3' 24",5. These, 

 with the latitude and longitude of Butterton, 50° 24' 46",g 

 and 3 52' 47",5, give 50 21' 2i",i for the latitude, and 4 8' 

 ij",g for the longitude, of the flagstaff on Drake's Island. 



The latitude and longitude of this spot was determined by 

 Mr. Bayley, in the year 1 792. The observations for the former 

 were as follows : 



5o°2i / 20" Q y s LL. 



50 21 30,5 ditto. 



50 21 31 ditto. 



50 21 29 a. Aquilse. 



50 21 26,5 a, Ophiuchi. 



50 21 55 g 's ll. The mean of these is 50 2 1' 28",5. 

 The place chosen by Mr. Bayley, as I have been lately in- 

 formed, was a few feet northward of the staff; therefore, 7^,4 

 may be taken for the true difference between our determinations. 

 The longitude of Mr. Bayley's station, found by the moon's 

 transit, was 4 18' 52"; but* the longitude deduced from the 

 recent operations, is 4 S' iy",g; there is, therefore, a difference, 

 of 10' 34", i between the two determinations, 



