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 surface of our globe. In their structure they are most nearly allied to the Gallinaceæ, while in some of their actions and in their mode of flight they much resemble the Rallidæ: the small size of their brain, coupled with the extraordinary means employed for the incubation of their eggs, indicates an extremely low degree of organisation. Three species inhabiting Australia, viz., Leipoa ocellatta, Tallegalla, and Megapodius tumulus, although referable to distinct genera, have many habits in common, particularly in their mode of incubation, each and all depositing their eggs in mounds of earth and leaves, which, becoming heated either by fermentation of the vegetable matter, or by the sun's rays, form a kind of natural hatching apparatus, from which the young at length emerge, fully feathered, capable of sustaining life by their own unaided efforts.

The male bird of the leipoa (according to a letter to Mr. Gould from Sir George Grey, the present Governor of New Zealand) weighs about four pounds and a half; they never fly if they can help it, and roost on trees at night. The mounds are from twelve to thirteen feet in circumference at the base, and from two to three feet in height. To construct the mound a nearly circular hole of about eighteen inches in diameter is scratched in the ground to the depth of seven or eight inches, and filled with dead leaves, dead grass, and similar materials; over this layer a mound of sand, mixed with dry grass, &c., is thrown; and, finally, the whole assumes the form of a dome. When an egg is to be deposited, the top is laid open, and a hole scraped in the centre to within two or three inches of the bottom of the layer of dead leaves; the egg is placed in the sand just at the edge of the hole, in a vertical position, with the smaller end downwards; the sand is then thrown in again until the mound assumes its original form. "Egg after egg is thus deposited up to eight, arranged on the same plane in a circle, with a few inches of sand between each. The cock assists the hen in opening and covering up the mound. The native name on the Murray River is marrah-ko; in Western Australia the name of the bird is ngow—ngoweer, meaning a tuft of feathers."

The Megapodius, of which we give an engraving, was found by Mr. John M'Gillivray, during a survey of Endeavour Straits, to construct a much larger mound, 24 feet in its utmost height, and 150 feet in circumference at the base.

South Australia has been divided into counties, which are more recognised as distinctive boundaries than in the other colonies, were the first colonisation was effected by sheep.

These counties are eleven in number, viz.—1. Adelaide; 2. Hind-