NOTE.–The Madeiran Archipelago consists of five islands disposed in a scalene triangle, whose points are Porto Santo (23 miles, north-east), Madeira (west), and the three Desertas (11 miles, south-east). The Great and Little Piton of the Selvagens, or Salvages (100 miles, south), though belonging to Portugal and to the district of Funchal, are geographically included in the Canarian group. Thus, probably, we may explain the ’Aprositos,’ or Inaccessible Island, which Ptolemy
[Footnote: The great Alexandrian is here (iv. 6, §§ 33-4) sadly out of his reckoning. He places the group of six islands adjacent to Libya many degrees too far south (N. lat. 10°-16°), and assigns one meridian (0° 0’ 0”) to Aprositos, Pluitana (Pluvialia? Hierro?), Caspeiria (Capraria? Lanzarote?), and another and the same (1° 0’ 0”) to Pintouaria (Nivaria? Tenerife?), Hera (Junonia? Gomera?), and Canaria.]
includes in his Six Fortunates; and the Isle of SS. Borondon and Maclovius the Welshman (St. Malo). The run from Lizard’s Point is laid down at 1,164 miles; from Lisbon, 535; from Cape Cantin, 320; from Mogador (9° 40’ west long.), 380; and 260 from Santa Cruz, Tenerife. The main island lies between N. lat. 32° 49’ 44” and 32° 37’ 18"; the parallel is that of Egypt, of Upper India, of Nankin, and of California. Its longitude is included within 16° 39’ 30” and 17° 16’ 38" west of Greenwich. The extreme length is thus 37-1/2 (usually set down as 33 to 54) miles; the breadth, 12-1/2 (popularly 15-16 1/2); the circumference, 72; the coast-line, about 110; and the area, 240–nearly the size of Huntingdonshire, a little smaller than the Isle of Man, and a quarter larger than the Isle of Wight. Pico Ruivo, the apex of the central volcanic ridge, rises 6,050-6,100 feet, with a slope of 1 in 3.75; the perpetual snow-line being here 11,500. Madeira is supposed to tower from a narrow oceanic trough, ranging between 13,200 and 16,800 feet deep. Of 340 days, there are 263 of north-east winds, 8 of north, 7 of east, and 62 of west. The rainfall averages only 29.82 to 30.62 inches per annum. The over-humidity of the climate arises from its lying in the Guinea Gulf Stream, which bends southward, about the Azores, from its parent the great Gulf Stream, striking the Canaries and flowing along the Guinea shore. (White and Johnson’s Guide-Book, and ’Du Climat de Madère,’ &c., par A. C. Mourão-Pitta, Montpellier, 1859, the latter ably pleading a special cause.)