A canal crosses the isthmus, so that the peninsula becomes an island.

ON THE GOLDEN TRAIL; CROSSING THE ISTHMUS IN FORTY-NINE, by Harry C. Peterson.

Besides eating away the ancient isthmus, the James attacked the upper end of the island, devouring part of the site of the old-time settlement.

Now Thapsus is situated on a kind of peninsula, with the sea on one side and a marsh stretching along on the other: between them lies a narrow, swampy isthmus so that one has access to the town from two directions by an extremely narrow road running along both sides of the marsh close to the surf.

COLOMBIA (4,000), a federal republic of nine States, occupying the isthmus of Panama and the NW. corner of S. America, between Venezuela and Ecuador.

We promptly raised the submerged isthmus, tying the island to the mainland once more.

Columbus on his fourth and last voyage reaches the isthmus of Panama.

The nations of the Peloponnese closed the isthmus of Corinth by a wall.

But the same resistless wash of waves that had carried part of James Towne into the bed of the river, had broken down and submerged the isthmus too; and our chart showed that there was water enough for our houseboat to sail over where the colonists used to walk dry-shod.

The stone composing this isthmus is so compact, that the best mill-stones in the Ionian Islands are made from it; but it is in fact nothing more than gravel and sand cemented by calcareous matter, the accretion of which is supposed to be rapidly advancing at the present day.