S48 



APPENDIX. 



Beagle's Chain of Meridian Distances and Resulting 

 Longitudes in the Atlantic Ocean. 



1831—1836. 



Monte Video to Port Desire 



H. 



o 



M. 



38 



s. 

 43,0 



H. 



4 



M. 



23 



s. 



40,8 



Port Desire to Port Famine ... 



o 



20 



10,7 



4 



43 



51,5 



Port Famine to Port Louis 



o 



51 



22,0 



3 



52 



29,5 



Port Louis to Cape Horn 



0 



36 



35,2 



4 



29 



04,7 



Bahia to Ascension 



1 



36 



26,7 



0 



57 



37,1 



Ascension to St. Helena 



o 



34 



45,7 



0 



22 



5',4 



St. Helena to Simon's Bay 



1 



36 



33,3 



1 



13 



41,9 



Simon's Bay to the Observatory at the Cape 

 of Good Hope 



0 



00 



10,9 



1 



13 



52,8 



Other Determinations. 



Beagle in 1829 — Monte Video to Port Desire 



0 



38 



47,7 



Beagle in 1830 — Port Desire to Monte Video ... 



0 



38 



45,9 



Adventure (tender)— Port Desire to Port Louis 



0 



31 



11,0 



Adventure (tender) — Port Louis to Port Famine 



0 



51 



21,9 



And, therefore, Port Desire to Port Famine 



0 



20 



10,9 



Captain King's published result of all the measures made be- 









tween 1826 and 1830 places Port Famine west of Monte 









Video 



0 



58 



58,1 



The present result, as above stated, is ... 



0 



58 



58,7 



Beagle in 1830 — Cape Horn to Port Desire, by three short 









steps with intervening rates 



0 



05 



23,7 



Which would place Cape Horn in longitude ... 



4 



29 



04,5 



Beagle in 1832 — Direct from Monte Video, made 



4 



29 



08 



Captain Foster's meridian distance from Monte Video to St. 









Martin Cove, reduced to Cape Horn, and used with the 









Beagle's longitude of Monte Video, gives the longitude ... 



4 



29 



04 



Coquille, M. Duperrey— St. Helena to Ascension 



0 



34 



46,8 



Captain Foster — St. Helena to Ascension 



0 



34 



48,3 



Captain Foster — St. Helena to the Cape Observatory 



1 



36 



45,7 



Nautical Almanac — St. Helena to the Cape Observatory 



1 



36 



45,0 



Mr. Fallows, 1828 — Cape Observatory 



1 



13 



53,2 



Mr. Henderson, 1832 — Cape Observatory 



1 



13 



55,6 



Mr. Maclear, 1836 — Cape Observatory 



1 



13 



55,0 



When the Beagle went to Rio de Janeiro in 1826, she made the longitude 

 2h. 52m. 36s. She stopped at Port Praya, for rates, by the way. Captain 

 Stokes made the longitude of Rio de Janeiro nearly the same by lunars. 



Malaspina and Espinosa made the longitude of Monte Video (Rat Island) 

 nearly 3h. 44m. 58s. Captain Stokes made it 3h. 44ra. 56s. 



