7a 



GEOGRAPHICAL POSITIONS. 



16. THE BERMUDA ISLANDS. 



LAT V. 



LONG. W. 



VAR. 



WEST, 



AXTTHORITIBS. 



Ireland Island, South extr. 



of breakwater [1] 



Somerset Islamd, beacon... 

 Gibb's Hill, Lighthouse [2] 

 Castle Island, entrance of 



Castle Harbour 



St. David's Head, Lightho 

 Fort Cun-ningham, entr. of 



St. George's Harbour . 

 Mills Breaker, eastern edge 



of the reef 



North Rock, northern side 



of reef 



Challenger Bank, N.E. ex 



tremity 24 fathoms , 



64 51 35 



64 53 55 

 64 51 36 



64 41 50 

 64 40 40 



64 41 



64 39 20 



64 47 45 



65 4 15 



8 20 



The Trigonometrical Sur- 

 vey, by Captain Thos. Hurd, 

 E.N., between the years 1783 

 and 1797, adjusted by the ob- 

 servations of Captain Edward 

 Barnett, R.N., 1846, and later 

 observers. 



NOTES. 



1. Between the years 1783 and 1797, Captain T. Hurd, E.N., was employed in the 

 survey of these beautiful islands, the outline of which survey was published by the British 

 Admiralty. Captain Hurd deduced his longitudes from Wreck Hill, which may be taken 

 as having been within 4' or 5' East of the correct longitude. In the chart of the Bermuda 

 Islands, published by Mr. Laurie, the longitude is deduced from recent observations, but 

 notice was issued, in 1886, that from further investigation the Dockyard Clock Tower at 

 Ireland Island appeared to be in long. 64" 49' 35", or about 2' to the eastward of the 

 position previously accepted. This would affect all the positions here given. Now that 

 telegraphic communication exists with the islands, from Hahfax, N.S., the exact longitude 

 will probably be ascertained before long. 



Wreck Hill. — Captain Hurd considered this to be in lat. 32° 16' 20", long. 64° 50' ; 

 but, according to the corrected position of Ireland Island flagstaff, this is 1' 25" South, 

 and 4' 40" East of its right place. 



2. Gebb's Hill Lighthouse. — The position of this was obtained by triangulation from 

 Ireland Island. Recent observations, by English and United States Officers, make the 

 longitude to be 64° 50' 7" W. 



The Variation of the CoaevASs is increaainy at Bermuda, at the rate of about 2' per 

 annum. 



