Pyrrhus (2.5-2.6)

and so there was delay, one party shouting what the other could not understand, until some one bethought himself of a better way. He stripped off a piece of bark from a tree and wrote thereon with a buckle-pin a message telling their need and the fortune of the child; then he wrapped the bark about a stone, which he used to give force to his cast, and threw it to the other side.

Some say, however, that it was a javelin about which he wrapped the bark, and that he shot it across. Accordingly, when those on the other side had read the message and saw that no time was to be lost, they cut down trees, lashed them together, and made their way across. As chance would have it, the first of them to make his way across was named Achilles; he took Pyrrhus in his arms, and the rest of the fugitives were conveyed across by others in one way or another.