all times and after heavy rain casual water appears in all places but soon drains away in the porous rock. There is a small tidal lagoon in the north and a large long one in the south which completely dry out during the rise and fall of tides leaving extensive sands and mud flats and man- grove flats for waders to feed on. Generally speaking the Island has no striking geographical features except the abrupt coral outcrops in the east which have previously been islands. These have extensive caves in their precepitous sides. Here and there on the island caverns of no large extent are present in the more or less level coral plain generally in the form of dry pot holes, with only slightly over- hanging edges. Nowhere do collapsed caverns appear. The most constant features are the innumerable potholes of varying size previously mentioned, the greater part being small and shallow. These play a large part in the island vegetation and they have trapped and held soil as it formed from weathering of coral rock and decomposing vegetable matter. Where such have been small and numerous and shallow areas of more or less level soil have formed but even these are broken with larger holes 3 and 4 feet deep at wide or often close intervals. Generally speaking the island is very infertile except for small soil pockets which reach a certain but low degree of fertility. The most extensive of these being generally on the higher parts of the plain in the east and near the bases of the hundred foot outcrop barrier. Rainfall is very irregular and probably from 40 to 60 inches a year more often in the forties. The bulk of this falls from Feb. to May or during hurricanes in latitudes to the north and west. Hurricanes visit the island only infrequently (once in