At length the obliging lads became a little too accommodating. They used their persuasives upon the donkeys so vigorously that they--the donkeys--started off on a lope, a sort of awkward, lop-sided gallop. Now, if there is anything that is beyond the ability of Master Jack, especially if he is old, it is to canter and at the same time preserve his equilibrium. It is evident that he is not built to make a rocking-chair of his back bone. So a little comedy was enacted, all involuntary on the part of the _dramatis personæ_. Suddenly Turpentine--that was the name of the little gray burro ridden by my boy companion--took a header, sending his youthful rider sprawling to the ground, where he did not remain a moment longer than good manners demanded. Fortunately he succeeded in disengaging his feet from the stirrups and directing his movements in such a way that the animal did not fall upon him. But poor Turpentine, what of him? He tumbled clean over his head upon his back, and I want to confess in all candor that one of the most instructive and interesting "animal pictures" I have ever seen, including those done by Landseer, Rosa Bonheur, and Ernest Thompson Seton, was that little iron-gray, long-eared donkey lying on his back on the street and clawing the air with his hoofs. And he clawed fast, too--fairly sawed the air. For once in his life Turpentine, the snail paced, was in a hurry; for once he moved with more celerity than grace. It threw us into spasms of laughter to see him exert himself so vigorously to reverse his position--to get his feet down and his back up. A cat could not have done it with more celerity. You never would have believed him capable of putting so much vim and vigor into his easy-going personality. After chopping the air with his hoofs for a second or two, he succeeded in righting himself, and was on his feet in less time than it takes to tell it. There he stood, as meek as Mary's lamb, trying to look as if he had never turned an undignified somersault in all his tranquil life. We started on our journey again, and presently, to our intense relief, reached the border of the town, thanked the lads who had expedited our march along the street, and proceeded on our way up the valley. We soon settled down to taking our burros philosophically, and erelong they were going calmly on the even tenor of their way, and afterwards we had little trouble with them, and actually became quite attached to the gentle creatures before our joint pilgrimage drew to an end.