system. M.
Feraud states that the separate graves were united together by open
corridors formed by double or triple rows of large stones, but no traces
of such a system could be found by the later visitors to the site,
Messrs. MacIver and Wilkin.

Fortunately we have some record of what these graves contained, for
thirteen were opened by Mr. Christy and M. Feraud. One contained a human
skeleton in good condition, buried in the contracted position with the
knees to chin and arms crossed. With this were two whole vases,
fragments of others, and pieces of cedar wood. At the feet of the
skeleton were two human heads, and as the graves would not have
accommodated more than one whole body M. Feraud suggests that these
belong to decapitated victims. Another grave contained, in addition to
human bones, those of a horse, together with three objects of copper,
viz. a ring, an earring, and a buckle. In another were found the teeth
and bones of a horse and an iron bit.

An entirely different type of monument is found near Msila, south-west
of Algiers. Here is a long low hill called the Senam, covered with large
numbers of stone circles. These consist of large slabs of natural
limestone set up on edge and not very closely fitted. The height of the
slabs varies from 2 to 3 feet, and the diameters of the three still
perfect circles are 23-1/2, 26-3/4, and 34-1/3 feet respectively. At a
point roughly south-east there is a break in the circumference, filled
by a rectangular niche (Fig. 19) consisting of three large slabs, and
varying in width from 2 ft. 6 in. to 6 feet. There is a possibility that
the niches were originally roofed, but the evidence on this point is far
from conclusive. The interior of the circle is filled with blocks of
stone, apparently heaped up without any definite plan. There seems to be
no clue as to the meaning of these circles, as none have as yet been
explored. MacIver and Wilkin are probably right in classing them as
graves.

[Illustration: FIG 19. Stone circle at the Senam, Algeria.
(After MacIver and Wilkin).]

The most famous, however, of the Algerian sites is unquestionably that
of Roknia. Here the tombs lie on the side of a steep hill. They consist
of dolmens often surrounded by stone circles from 25 to 33 feet in
diameter. The cover-slabs of the dolmens usually rest on single
uprights, and never on built walls. Several of the graves excavated
contained more than one body, one yielding