Tom, laughing in sympathy with her mirth, nodded. "Picket her, with her bell on, and we can let the others graze without hobbles or ropes. They won't leave her. Don't ask me why, for if you do I can only answer by saying that they have been trained that way; why it is possible for them to be trained in such a way, and so easily, is beyond me. When we left Independence Hank and I caught many a scornful glance directed at our _atejo_, for I must confess that it was made up of eight scarecrows; but handsome is as handsome does, and now our pack train troubles are confined solely to packing and unpacking the animals. We don't even have to remember what pack or _aparejo_ belongs to each mule; they know their own unerringly, and will shower kicks on any careless or stupid companion who blunders up to the wrong pack. Perhaps you've heard that mules are stupid; that's something that you can discount heavily. They are stupid only when it serves their purpose." He laughed again. "We have one mule that takes a thrashing every morning, regular as a clock. Hank calls him 'Dummy,' but I am not sure that he is well named. I can't decide whether he is dumb or perverse. But the fact remains that he never selects his own pack, and gets kicked along the line until he reaches it by elimination. I shall enjoy studying him as we go along." As they jogged on, a strip of timber running almost at right angles to their course and thinning out to the north in about the same proportion that it thickened to the south, came in sight and Tom knew it to be Cottonwood Creek, and their last glimpse of the waters of the Neosho. He well remembered the somewhat sharp bend formed by it on the farther side, which was taken advantage of by some caravans and the corral formation ignored. A line of closely spaced wagons across the neck of the bend made corral enough. "Well, we better get back to the caravan," he said. "While the creek is all right there are many who are only waiting for a chance to cry that the officers are remiss in their duties. I'll leave you with your uncle, well guarded by six trusty knights, and go ahead with the advance guard." She glanced at him out of the corner of her eye and the repression of her smile did not seriously affect the witchery of the dimples. "I was a little afraid that I might become lonesome on this long journey; but things have turned out splendidly. Don't you think Dr. Whiting has a very distinguished air?" "Very; it would distinguish him out of hundreds," replied Tom, scowling at the timber fringe ahead. "He is quite impressive when he is silent. It's a pity he doesn't realize it." He turned in the saddle and looked behind. "What did I say? There comes Hank, with an antelope slung before his saddle. I doubt if the doctor would need the red handkerchief; antelope are notoriously affected by anything curious."