Only here and there, as at Aripo, are left patches, as it were, of a third Flora, which once spread uninterruptedly along the southern base of the Cordillera and over the lowland which is now the Gulf of Paria, along the alluvial flats of the mighty stream; and the Moriche palms of Aripo may be the lineal descendants of those which now inhabit the Llanos of the main; as those again may be the lineal descendants of the Moriches which Schomburgk found forming forests among the mountains of Guiana, up to four thousand feet above the sea.

Age after age the Moriche apples floated down the stream, settling themselves on every damp spot not yet occupied by the richer vegetation of the forests, and ennobled, with their solitary grandeur, what without them would have been a dreary waste of mud and sand.
These Savannas of Trinidad stand, it must be remembered, in the very line where, on such a theory, they might be expected to stand, along the newest deposit; the great band of sand, gravel, and clay rubbish which stretches across the island at the mountain-foot, its highest point in thirty-six miles being only two hundred and twenty feet--an elevation far less than the corresponding depression of the Bocas, which has parted Trinidad from the main Cordillera.

That the rubbish on this line was deposited by a river or estuary is as clear to me as that the river was either a very rapid one, or subject to violent and lofty floods, as the Orinoco is now.

For so are best explained, not merely the sheets of gravel, but the huge piles of boulder which have accumulated at the mouth of the mountain gorges on the northern side.
As for the southern shore of this supposed channel of the Orinoco, it at once catches the eye of any one standing on the northern range.

He must see that he is on one shore of a vast channel, the other shore of which is formed by the Montserrat, Tamana, and Manzanilla hills; far lower now than the northern range, Tamana only being over a thousand feet, but doubtless, in past ages, far higher than now.