His first opportunity came that evening; but it was not until after a long struggle with selfishness and envy that he resolved to contribute that one-hundred-dollar check to the Lame Wolf Fund. He knew that he cut an awkward figure on his mule, and imagined that a horse would not only be much more elegant, but easier to ride. Then, too, Glen had such a beautiful mare; beside her his wretched mule would appear to a greater disadvantage than ever. He could buy as fine a pony as roamed the Plains for a hundred dollars. Then, too, that was what his father had sent him the money for. Had he a right to use it for any other purpose? To be sure, Mr. Gibbs had not known of the mule, and supposed his son would be obliged to go on foot if he did not buy a horse.