The history of Sumatra

by William Marsden

LATITUDE.

The equator divides it obliquely, its general direction being north-west and south-east, into almost equal parts; the one extremity lying in five degrees thirty-three minutes north, and the other in five degrees fifty-six minutes south latitude. In respect to relative position its northern point stretches into the Bay of Bengal; its south-west coast is exposed to the great Indian Ocean; towards the south it is separated by the Straits of Sunda from the island of Java; on the east by the commencement of the Eastern and China Seas from Borneo and other islands; and on the north-east by the Straits of Malacca from the peninsula of Malayo, to which, according to a tradition noticed by the Portuguese historians, it is supposed to have been anciently united.

LONGITUDE.

The only point of the island whose longitude has been settled by actual observation is Fort Marlborough, near Bencoolen, the principal English settlement, standing in three degrees forty-six minutes of south latitude. From eclipses of Jupiter's satellites observed in June 1769, preparatory to an observation of the transit of the planet Venus over the sun's disc, Mr. Robert Nairne calculated its longitude to be 101 degrees 42 minutes 45 seconds; which was afterwards corrected by the Astronomer Royal to 102 degrees east of Greenwich. The situation of Achin Head is pretty accurately fixed by computation at 95 degrees 34 minutes; and longitudes of places in the Straits of Sunda are well ascertained by the short runs from Batavia, which city has the advantage of an observatory.

MAP.

By the general use of chronometers in latter times the means have been afforded of determining the positions of many prominent points both on the eastern and western coasts, by which the map of the island has been considerably improved: but particular surveys, such as those of the bays and islets from Batang-kapas to Padang, made with great ability by Captain (now Lieutenant-Colonel) John Macdonald; of the coast from Priaman to the islands off Achin by Captain George Robertson; and of Siak River by Mr. Francis Lynch, are much wanted; and the interior of the country is still very imperfectly known. From sketches of the routes of Mr. Charles Campbell and of Lieutenant Hastings Dare I have been enabled to delineate the principal features of the Sarampei, Sungei Tenang and Korinchi countries, inland of Ipu, Moco-moco, and Indrapura; and advantage has been taken of all other information that could be procured. For the general materials from which the map is constructed I am chiefly indebted to the kindness of my friend, the late Mr. Alexander Dalrymple, whose indefatigable labours during a long life have contributed more than those of any other person to the improvement of Indian Hydrography. It may be proper to observe that the map of Sumatra to be found in the fifth volume of Valentyn's great work is so extremely incorrect, even in regard to those parts immediately subject to the Dutch government, as to be quite useless.

UNKNOWN TO THE ANCIENTS. TAPROBANE.

Notwithstanding the obvious situation of this island in the direct track from the ports of India to the Spice Islands and to China, it seems to have been unknown to the Greek and Roman geographers, whose information or conjectures carried them no farther than Selan-dib or Ceylon, which has claims to be considered as their Taprobane; although during the middle ages that celebrated name was almost uniformly applied to Sumatra. The single circumstance indeed of the latter being intersected by the equator (as Taprobane was said to be) is sufficient to justify the doubts of those who were disinclined to apply it to the former; and whether in fact the obscure and contradictory descriptions given by Strabo, Pomponius Mela, Pliny, and Ptolemy, belonged to any actual place, however imperfectly known; or whether, observing that a number of rare and valuable commodities were brought from an island or islands in the supposed extremity of the East, they might have been led to give place in their charts to one of vast extent, which should stand as the representative of the whole, is a question not to be hastily decided.

OPHIR.

The idea of Sumatra being the country of Ophir, whither Solomon sent his fleets for cargoes of gold and ivory, rather than to the coast of Sofala, or other part of Africa, is too vague, and the subject wrapped in a veil of too remote antiquity, to allow of satisfactory discussion; and I shall only observe that no inference can be drawn from the name of Ophir found in maps as belonging to a mountain in this island and to another in the peninsula; these having been applied to them by European navigators, and the word being unknown to the natives.