back to his subject, dwelling and expatiating on it beyond all bounds. The very facility of the subject fascinated him. Absentmindedness, indeed, is not perhaps the actual fountain-head of the comic, but surely it is contiguous to a certain stream of facts and fancies which flows straight from the fountain-head. It is situated, so to say, on one of the great natural watersheds of laughter.
Now, the effect of absentmindedness may gather strength in its turn. There is a general law, the first example of which we have just encountered, and which we will formulate in the following terms: when a certain comic effect has its origin in a certain cause, the more natural we regard the cause to be, the more comic shall we find the effect. Even now we laugh at absentmindedness when presented to us as a simple fact. Still more laughable will be the absentmindedness we have seen springing up and growing before our very eyes, with whose origin we are acquainted and whose life-history we can reconstruct. To choose a definite example: suppose a man has taken to reading nothing but romances of love and chivalry. Attracted and fascinated by his
