The gecko grows as familiar with man as the domestic cat or dog,--entering human habitations freely, and rendering valuable service by the eagerness with which it devours flies, spiders, and other insect-plagues. During the day, it lurks generally in some obscure nook or dark corner; but at dusk sallies forth in search of prey, running up or down the steepest walls with wonderful swiftness, and giving utterance to a quick shrill noise by smacking its tongue against its palate. So flexible is its body, that it can adapt itself readily to any depression or irregularity in the surface of the ground, forming apparently a component part of it. This deception is facilitated by its dulness of colouring. It is a home-keeping animal, and never strays to any great distance from the lair which it has chosen. Despite its ugliness and its cry, which at night, when a dozen are heard replying to one another, becomes insupportably wearisome, it is one of man’s most useful allies in the animal-world, and merits his respect. A word as to the formation of its wide feet. All the toes are broadened considerably at the edges, and their under surface is divided into numerous transverse laminæ, from which exudes an adhesive fluid. Its claws are sharp, crooked, and retractile like those of a cat. ~ABOUT THE MARGOUILLA.~ Another animal of the same group, but much smaller, and closely resembling the tarenta of which the Toulonese are so afraid, is the _margouilla_, the “con-tan-lan” of the Annamites. It inhabits trees and houses with equal complacency. Every evening, when the tapers are lighted, it may be seen promenading along the ceiling, where it pounces upon the insects, uttering from time to time its short cry of satisfaction, which may be translated by the syllable _toc_ ten times repeated. It is partial to sugar; but as it is the inveterate enemy of the mosquitoes, no one begrudges it a dainty morsel from the sugar-basin. * * * * * ~EXCURSION TO KHOLEN.~ From Saigon Dr. Morice made an excursion to Kholen, the second town in size and population in Cochin-China. It lies about three miles from Saigon, but is connected with it by a line of villages, of pagodas, and of the country-houses of the wealthier Chinese merchants. Kholen is the centre of all the Chinese commerce of the colony. The amount of rice, stuffs, and products exported from China, which is sold there, almost passes belief; and the stranger surveys with interest the animation of its busy streets, and the numerous Chinese junks and Annamite sampans moored alongside its quays. [Illustration: CHINESE HOUSE AT KHOLEN.]