"OUR SUMATRA CORRESPONDENCE. "This island is now the property of the Stamford family,--having been won, it is said, in a raffle, by Sir--Stamford, during the stock-gambling mania of the South-Sea Scheme. The history of this gentleman may be found in an interesting series of questions (unfortunately not yet answered) contained in the 'Notes and Queries.' This island is entirely surrounded by the ocean, which here contains a large amount of saline substance, crystallizing in cubes remarkable for their symmetry, and frequently displays on its surface, during calm weather, the rainbow tints of the celebrated South-Sea bubbles. The summers are oppressively hot, and the winters very probably cold; but this fact cannot be ascertained precisely, as, for some peculiar reason, the mercury in these latitudes never shrinks, as in more northern regions, and thus the thermometer is rendered useless in winter. "The principal vegetable productions of the island are the pepper tree and the bread-fruit tree. Pepper being very abundantly produced, a benevolent society was organized in London during the last century for supplying the natives with vinegar and oysters, as an addition to that delightful condiment. [Note received from Dr. D. P.] It is said, however, that, as the oysters were of the kind called NATIVES in England, the natives of Sumatra, in obedience to a natural instinct, refused to touch them, and confined themselves entirely to the crew of the vessel in which they were brought over. This information was received from one of the oldest inhabitants, a native himself, and exceedingly fond of missionaries. He is said also to be very skilful in the CUISINE peculiar to the island. "During the season of gathering the pepper, the persons employed are subject to various incommodities, the chief of which is violent and long-continued sternutation, or sneezing. Such is the vehemence of these attacks, that the unfortunate subjects of them are often driven backwards for great distances at immense speed, on the well-known principle of the aeolipile. Not being able to see where they are going, these poor creatures dash themselves to pieces against the rocks or are precipitated over the cliffs and thus many valuable lives are lost annually. As, during the whole pepper-harvest, they feed exclusively on this stimulant, they become exceedingly irritable. The smallest injury is resented with ungovernable rage. A young man suffering from the PEPPER-FEVER as it is called, cudgelled another most severely for appropriating a superannuated relative of trifling value, and was only pacified by having a present made him of a pig of that peculiar species of swine called the Peccavi by the Catholic Jews, who, it is well known, abstain from swine's flesh in imitation of the Mahometan Buddhists.