_Latitude and Longitude_.--There has hitherto been considerable uncertainty as to the position assigned to Ceylon in the various maps and geographical notices of the island: these have been corrected by more recent observations, and its true place has been ascertained to be between 5° 55' and 9° 51' north latitude, and 79° 41' 40" and 81° 54' 50" east longitude. Its extreme length from north to south, from Point Palmyra to Dondera Head, is 271-1/2 miles; its greatest width 137-1/2 miles, from Colombo on the west coast to Sangemankande on the east; and its area, including its dependent islands, 25,742 miles, or about one-sixth smaller than Ireland.[1] [Footnote 1: Down to a very recent period no British colony was more imperfectly surveyed and mapped than Ceylon; but since the recent publication by Arrowsmith of the great map by General Fraser, the reproach has been withdrawn, and no dependency of the Crown is more richly provided in this particular. In the map of Schneider, the Government engineer in 1813, two-thirds of the Kandyan Kingdom are a blank; and in that of the Society for the Diffusion of Knowledge, re-published so late as 1852, the rich districts of Neuera-kalawa and the Wanny, in which there are innumerable villages (and scarcely a hill), are marked as "_unknown mountainous region_." General Fraser, after the devotion of a lifetime to the labour, has produced a survey which, in extent and minuteness of detail, stands unrivalled. In this great work he had the co-operation of Major Skinner and of Captain Gallwey, and to these two gentlemen the public are indebted for the greater portion of the field-work and the trigonometrical operations. To judge of the difficulties which beset such an undertaking, it must be borne in mind that till very recently travelling in the interior of Ceylon was all but impracticable, in a country unopened even by bridle roads, across unbridged rivers, over mountains never trod by the foot of a European, and amidst precipices inaccessible to all but the most courageous and prudent. Add to this that the country is densely covered with forest and jungle, with trees a hundred feet high, from which here and there the branches had to be cleared to obtain a sight of the signal stations. The triangulation was carried on amidst privations, discomfort, and pestilence, which frequently prostrated the whole party, and forced their attendants to desert them rather than encounter such hardships and peril. The materials collected by the colleagues of General Fraser under these discouragements have been worked up by him with consummate skill and perseverance. The base line, five and a quarter miles in length, was measured in 1845 in the cinnamon plantation at Kaderani, to the north of Colombo, and its extremities are still marked by two towers, which it was necessary to raise to the height of one hundred feet, to enable them to be discerned above the surrounding forests.