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418 from the woodcut No. 178, The lower part of the wall is composed alternately—as in the circle just alluded to—of large stones laid on their sides and smaller ones standing perpendicularly between them. Above this the courses of stones are of regular masonry, and probably there was some kind of cornice or string-course before the beginning of the roof, but of this no trace now remains in any of these monuments.

The second group, known as Hagiar Khem, is situated near Krendi, on the south side of the island of Malta, and is the most extensive one known. The principal monument contains, besides the usual pair of chambers, four or five lateral chambers; and a short way to the north is a second monument, containing at least one pair; and to the south a third group, but so ruined it is difficult to make out the plan. Only the tops of the walls and the tall stones which still rise above the walls were known to exist of the monument, till in 1839 Sir Henry Bouverie authorized the expenditure of some public money to excavate it. An account of these excavations, with a plan and drawings, was published in Malta at the time by Lieutenant Foulis. The plan was repeated, in less detail however, in the 'Archæologia,' and afterwards in the Norwich volume of the International Prehistoric Congress, by Mr. Furze, from a survey recently made by the Royal Engineers.

The third group, known as that at Mnaidra, is situated not far from the last, between it and the sea; and as it never has been published, a plan of it is given here from a survey made by Corporal Mortimer, of the Royal Engineers. Like the Gozo monument, it consists of two pairs of oval chambers in juxtaposition. The right-hand pair, in this instance, is larger and simpler in design than that on the left, but it is so nearly identical, both in plan and dimensions, with the right-hand pair at Gozo that they are probably of the same age and served the same purpose. They are also, as nearly as may be, of the same