Probably my readers already understand that the bookstore in which Mark has secured a place is the same in which Roswell Crawford is employed. This circumstance, if Mark had only known it, was likely to make his position considerably less desirable than it would otherwise have been. Mr. Baker, the proprietor of the store, was very considerate in his treatment of those in his employ, and Mr. Jones, his chief clerk, was good-natured and pleasant. But Roswell was very apt to be insolent and disagreeable to those who were, or whom he considered to be, in an inferior position to himself, while his lofty ideas of his own dignity and social position as the "son of a gentleman," made him not very desirable as a clerk. Still he had learned something from his bad luck thus far. He had............