His Other Self — W.W. Jacobs / William Wymark Jacobs

"They're as like as two peas, him and 'is brother," said the night- watchman, gazing blandly at the indignant face of the lighterman on the barge below; "and the on'y way I know this one is Sam is because Bill don't use bad langwidge. Twins they are, but the likeness is only outside; Bill's 'art is as white as snow."