the straight single stem of the palmyra, the dome palm spreads
into branches, each of which invariably represents the letter Y.
The fruit grows in dense clusters, numbering several hundred, of
the size of a small orange, but of an irregular oval shape; these
are of a rich brown colour, and bear a natural polish as though
varnished. So hard is the fruit and uninviting to the teeth, that
a deal board would be equally practicable for mastication; the
Arabs pound them between stones, by which rough process they
detach the edible portion in the form of a resinous powder. The
rind of the nut which produces this powder is about a quarter of
an inch thick; this coating covers a strong shell which contains
a nut of vegetable ivory, a little larger than a full-sized
walnut. When the resinous powder is detached, it is either eaten
raw, or it is boiled into a delicious porridge, with milk; this
has a strong flavour of gingerbread.

The vegetable ivory nuts are then soaked in water for about
twenty-four hours, after which they are heaped in large piles
upon a fire until nearly dry, and thoroughly steamed; this
process renders them sufficiently tractable to be reduced by
pounding in a heavy mortar. Thus, broken into small pieces they
somewhat resemble half-roasted chestnuts, and in this state they
form excellent food for cattle. The useful dome palm is the chief
support of the desert Arabs when in times of drought and scarcity
the supply of corn has failed. At this season (June) there was
not a blade of even the withered grass of the desert oases. Our
donkeys lived exclusively upon the dhurra (Sorghum Egyptiaca)
that we carried with us, and the camels required a daily supply
of corn in addition to the dry twigs and bushes that formed their
dusty food. The margin of the river was miserable and uninviting;