Tetuaroa and Tubai, besides the three western Leeward Isles, are coral atolls.
From 1893 to 1894 he was secretary to the governor of the Leeward Islands.
The archipelago is divided into two groups - the Leeward (lies sous le Vent) and the Windward Islands (Iles du Vent) - by a clear channel of 60 m.
More rain falls from January to May than during the other months; very much more falls on the windward side of the principal islands than on the leeward; and the amount increases with the elevation also up to about 4000 ft.
From this cause also, therefore, the leeward side of the valley receives more rain than the windward side.