WHEN Bartley Hubbard went to interview Silas Lapham for the "Solid Men of Boston" series, which he undertook to finish up in The Events, after he replaced their original projector on that newspaper, Lapham received him in his private office by previous appointment. "Walk right in " he called out to the journalist, whom he caught sight of through the door of the counting-room. He did not rise from the desk at which he was writing, but he gave Bartley his left hand for welcome, and he rolled his large head in the direction of a vacant chair. "Sit down I'll be with you in just half a minute." "Take your time," said Bartley, with the ease he instantly felt. "I'm in no hurry." He took a note-book from his pocket, laid it on his knee, and began to sharpen a pencil.