They had only to sharpen it on a piece of sandstone, then to raise the edge on a finer stone.

Now sandstone was abundant on the beach, and two hours after the stock of tools in the colony consisted of two sharp blades, which were easily fixed in solid handles.
The production of these their first tools was hailed as a triumph.

It was indeed a valuable result of their labor, and a very opportune one.
They set out.
Cyrus Harding proposed that they should return to the western shore of the lake, where the day before he had noticed the clayey ground of which he possessed a specimen.

They therefore followed the bank of the Mercy, traversed Prospect Heights, and after a walk of five miles or more they reached a glade, situated two hundred feet from Lake Grant.
On the way Herbert had discovered a tree, the branches of which the Indians of South America employ for making their bows.

It was the crejimba, of the palm family, which does not bear edible fruit.