While several districts in the north and east are tributary to this country, it appears to have been itself originally a great fief of China. Thus the King of Siam receives from this neighbouring empire a special confirmation of his authority, much resembling the patronage accorded by the Sultan to the Barbary states. However, if the external forms of this vassalage are observed, it is rather from a profound respect for tradition and ancient custom than from any virtual recognition of the power of the Emperor of China to acknowledge or interfere with the rights of sovereignty. One of the dependencies of this country, Cambodia, is also claimed by Cochin-China, and its ruler, unable to resist either of his more powerful neighbours, is forced to pay tribute to both. POPULATION. The population of Siam cannot yet be determined with any great exactness, but it is certain that it bears no proportion to the extent of territory. Archbishop Pallegoix estimates it at only 6,000,000--a computation, however, very different from that of Sir John Bowring. The difficulty of arriving at any correct result is augmented by the Siamese custom of numbering only the men. Thus, the native registers showed, a few years ago, for the male sex, 2,000,000 Siamese, 1,000,000 Laotians, 1,000,000 Malays, 1,500,000 Chinese, 350,000 Cambodians, 50,000 Peguans, and a like number composed of various tribes inhabiting the mountain ranges. [Illustration: Drawn by M. Bocourt from a Photograph. SIAMESE WOMEN.] PHYSICAL FEATURES.