PREPARATORY NOTE
Three of the papers in this volume have been privately printed. I have added, however, some new matter to the sketches of Ainsworth and James; and it has been suggested to me that those sketches should be published, although I have some misgivings about them. The other paper I am reprinting merely to please myself. Two men have confided to me that they have read it, and possibly two more may be persuaded to do the same thing.
November, 1909.