"You'd better talk to him, Tish," I said. "You can't get rid of him now."

But to tell Tish she cannot do a thing is to determine her to do it.

It was still early, only half-past eight, when she came to me with an eager face.

"I've got it, Lizzie," she said. "I'll send off Mona Lisa, and he will have to search for her. The only thing is, she won't move unless she's driven. If we could only find a hornet's nest again, we could manage. It may be cruel, but I understand that a hornet's sting is not as painful to a horse as to a human being."

Mona Lisa, I must explain, was the pack-horse. Tish had changed her name from Jane to Mona Lisa because in the mornings she was constantly missing, and having to be looked for.

Tish disappeared for a time, and we settled down to our long wait. Bill put another coat of stove polish on the weapons, and broke now and then into silent laughter. On my giving him a haughty glance, however, he became sober and rubbed with redoubled vigor.

In a half-hour, however, I saw Tish beckoning to me from a distance, and I went to her. I soon saw that she was holding her handkerchief to one cheek, but when I mentioned the fact she ignored me.

"I have found a nest, Lizzie," she cried. "Slip over and unfasten Mona Lisa. She's not near the other horses, which is fortunate."

I then perceived that Tish's yellow slicker was behind her on the ground and tied into a bundle, from which emerged a dull roaring. I was wondering how Tish expected to open it, when she settled the question by asking me to cut a piece from the mosquito netting which we put in the doorway of the tent at night, and to bring her riding-gloves.

Aggie was darning a hole in the tablecloth when I went back and Bill was still engaged with the weapons. Having taken what she required to Tish, under pretense of giving Mona Lisa a lump of sugar, I untied her. What followed was exactly as Tish had planned. Mona Lisa, not realizing her freedom, stood still while Tish untied the slicker and freed its furious inmates. She then dropped the whole thing under the unfortunate animal, and retreated, not too rapidly, for fear of drawing Bill's attention. For possibly sixty seconds nothing happened, except that Mona Lisa raised her head and appeared to listen. Then, with a loud scream, she threw up her head and bolted. By the time Bill had put down the stove brush she was out of sight among the trees, but we could hear her leaping and scrambling through the wood.