But not for long.

"I understand now," she said. "It is all clear. The photographer was riding ahead to get them up this valley somewhere. They've probably got a rendezvous all ready, with another camera in place. I must say," she observed, "that they are doing it thoroughly."

We rode for two hours, and no sign of them. The stove polish had come off the handles of our revolvers by that time, and Aggie, having rubbed her face ever and anon to remove perspiration, presented under her turban a villainous and ferocious expression quite at variance with her customary mildness.

I urged her to stop and wash, but Tish, after a glance, said to keep on.

"Your looking like that's a distinct advantage, Aggie," she said. "Like as not they'll throw up their hands the minute they see you. I know I should. You'd better ride first when we get near."

"Like as not they'll put a hole in me," Aggie objected. "And as to riding first, I will not. This is your doing, Tish Carberry, and as for their having blank cartridges--how do we know someone hasn't made a mistake and got a real one?"

Tish reflected on that. "It's a possibility," she agreed. "If we find that they're going to spend the night out, it might be better to wait until they've taken off all the hardware they're hung with."

But we did not come up with them. We kept on finding traces of the party in marshy spots, and once Tish hopped off her horse and picked up a small handkerchief with a colored border and held it up to us.

"It's hers," she said. "Anybody would know she is the sort to use colored borders. They're ahead somewhere."

But it seemed strange that they would go so far, and I said so.

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"We're far enough off the main trail, Tish," I said. "And it's getting wilder every minute. There's nothing I can see to prevent a mountain lion dropping on us most any time."

"Not if it gets a good look at Aggie!" was Tish's grim response.

It began to grow dark in the valley, and things seemed to move on either side of the trail. Aggie called out once that we had just passed a grizzly bear, but Tish never faltered. The region grew more and more wild. The trail was broken with mudholes and crossed by fallen logs. With a superb disdain Tish rode across all obstacles, not even glancing at them. But Aggie and I got off at the worst places and led our horses. At one mudhole I was unfortunate enough to stumble. A horse with a particle of affection for a woman who had ridden it and cared for it for several days would have paused.