Is uniformly sandy and of too recent formation to be much enriched by
decomposition. It varies but little in quality, there being no
alluvial deposits, owing to the flat character of the eastern portion
of the island. There is no sub-soil, except in a few localities, sand
and gravel extending down to the rock layers. As far as I penetrated
the interior, the roots of the fallen trees exposed only sand,
sea-washed stones and shells. Clay was observed at one or two points,
for a short distance between Hoya-kund-la and Tlell Rivers, also a
formation resembling peat.