The excavations at Rome, so rich in results, were not needed to prove that to the Romans of old caricature was a familiar thing. The mere magnitude of their theatres, and their habit of performing plays in the open air, compelled caricature, the basis of which is exaggeration. Actors, both comic and tragic, wore masks of very elaborate construction, made of resonant metal, and so shaped as to serve, in some degree, the office of a speaking-trumpet. In the engravings on this page are represented a pair of masks such as were worn by Roman actors throughout the empire, of which many specimens have been found. If the reader has ever visited the Coliseum at Rome, or even one of the large hippodromes of Paris or New York, and can imagine the attempts of an actor to exhibit comic or tragic effects of countenance or of vocal utterance across spaces so extensive, he will readily understand the necessity of such masks as these. The art of acting could only have been developed in small theatres. In the open air or in the uncovered amphitheatre all must have been vociferation and caricature. Observe the figure of old Silenus, on preceding page, one of the chief mirth-makers of antiquity, who lives for us in the Old Man of the pantomime. He is masked for the theatre. The legend of Silenus is itself an evidence of the tendency of the ancients to fall into caricature. To the Romans he was at once the tutor, the comrade, and the butt of jolly Bacchus. He discoursed wisdom and made fun. He was usually represented as an old man, bald, flat-nosed, half drunk, riding upon a broad-backed ass, or reeling along by the aid of a staff, uttering shrewd maxims and doing ludicrous acts. People wonder that the pantomime called "Humpty Dumpty" should be played a thousand nights in New York; but the substance of all that boisterous nonsense, that exhibition of rollicking freedom from restraints of law, usage, and gravitation, has amused mankind for unknown thousands of years; for it is merely what remains to us of the legendary Bacchus and his jovial crew. We observe, too, that the great comic books, such as "Gil Blas," "Don Quixote," "Pickwick," and others, are most effective when the hero is most like Bacchus, roaming over the earth with merry blades, delightfully free from the duties and conditions which make bondmen of us all. Mr. Dickens may never have thought of it--and he _may_--but there is much of the charm of the ancient Bacchic legends in the narrative of the four Pickwickians and Samuel Weller setting off on the top of a coach, and meeting all kinds of gay and semi-lawless adventures in country towns and rambling inns. Even the ancient distribution of characters is hinted at. With a few changes, easily imagined, the irrepressible Sam might represent Bacchus, and his master bring to mind the sage and comic Silenus. Nothing is older than our modes of fun. Even in seeking the origin of Punch, investigators lose