Some readers of these lectures have complained that it is often difficult to discriminate when they are serious and when they “attempt to be funny,” and have suggested that the attempts should be indicated clearly by a note, thus hand “this is a goak”!—and the remainder printed in red ink. While fully recognizing their difficulty and sympathizing with them, I am unable to entertain either proposal; the first is an American innovation utterly at variance with the conservative character of the work; and it is a fatal objection to the other that if whatever is important were picked out in red............