He had killed several birds when he saw a butterfly, of a species which he had not before met with, flitting across a gleam of sunshine which streamed in through a rift in the trees.

He told his Houssa to wait where he was in charge of the two guns and birds, and started off with his net in pursuit of the butterfly.

The creature fluttered away with Frank in full pursuit.

Hither and thither it flitted, seemingly taking an impish delight in tantalizing Frank, settling on a spot where a gleam of sunlight streamed upon the bark of a tree, till Frank had stolen up within a couple of paces of it, and then darting away again at a pace which defied Frank's best attempts to keep up with it until it chose to play with him again.

Intent only upon his chase Frank thought of nothing else.