.212 FLORA ANTARCTICA. [Fuegia, the 



America ; it is of an irregularly four-sided figure, bounded on the north by the strait of 

 Magalhaens, and on the east and west respectively by the South Atlantic and South Pacific 

 Oceans, whilst its southern shores are washed by the Antarctic Sea ; the main body of land 

 lies between the 53rd and 56th parallels of latitude and the 64th and 70th degrees of west 

 longitude, and its greatest extension is from east to west, indicated by a diagonal of 500 miles. 

 The general appearance of the whole has been aptly compared, by Mr. Darwin, to what woidd 

 be presented by a partially submerged chain of mountains. These islands are, in fact, formed 

 by the southern termination of the great Cordillera that traverses both Americas, which here 

 trends to the eastward, and whose further extension is probably indicated by South Georgia 

 in the same latitude ; and possibly also by Prince Edward's Island, the Crozets, and Kergue- 

 len's Land still more to the east, situated though these be in another ocean. The natural 

 features of Fuegia have been admirably described by various voyagers, and more particularly 

 by Cook, King, Fitzroy, and Darwin, to whose writings I would refer for more particular in- 

 formation. The exposed mountain-tops rise to a height of 7000 feet above the level of the 

 sea, and the lower limit of perpetual snow is reckoned at 3500-4000 feet. 



The botanical features exhibited by this country are not circumscribed by its geographi- 

 cal hmits ; along the north-east shores the very distinct Flora of East Patagonia accompanies 

 the geological formation prolonged there from the Patagonian plains. On the south-west and 

 south sides again, the vegetation is a continuation of that of West Patagonia, and is charac- 

 teristic of the western flank of the Cordillera, from South Chili to Cape Horn. Thus it is that 

 we find the Andes dividing two botanical regions from the North Polar almost to the Antarctic 

 circle. The greater part of Fuegia is formed by the Andes alone ; but the plants of the north- 

 east portion, where the granitic formation of Patagonia introduces a change in the vegetation 

 foreign to that of Tierra del Fuego, will be necessarily included in the present Flora. 



The Deciduous Beech (Fat/its antarctica), is the most distinguishing botanical production 

 of this country. In company with the Evergreen Beech (F. Forsteri), it covers the land, espe- 

 cially on the w T est coasts, as far north as the Chonos Archipelago, in latitude 45° south. It 

 is hardly seen in the north-east portions of Fuegia proper, northward of Staten Land, and 

 though abundant on the west flanks of the Andes, tlnongh fourteen degrees of latitude, is 

 unknown on the Atlantic side of Patagonia f. I have assumed therefore the shores of the 



shores : and again, that the botany of the North Atlantic Islands, the Azores, Madeira, and the Canaries, though 

 these groups are situated in the westerly winds, contain a large proportion of European species. The \iolcnce of 

 the perennial westerly gales to the southward of 45° is proverbial amongst sea-faring men; such winds carried 

 H.M.S. ' Chanticleer ' from Cape Horn to the Cape of Good Hope, a distance of four thousand mdes, in twenty-seven 

 days, and have enabled an oceanic fowl, the Cape pigeon, to maintain its position close to a ship during the whole of 

 that distance ; but still I am not inclined to attribute the prevalence of the Fuegiaii Flora over so vast an area to 

 their influence, when exerted against many other opposing agents. 



t Trees allied to these seem to have characterized the ancient or fossil flora of Fuegia, for I owe to Mr. Darwin's 

 kindness impressions of the leaves of three apparently distinct species of deciduous Beech, and which are mentioned 

 in that gentleman's journal. 



