The remains of the ancient pier upon which St. Paul landed may still be seen. Indeed, no Roman harbour has left behind such solid memorials. No less than thirteen of the buttresses that supported its arches are left, three lying under water; all constructed of brick held together by that Roman cement called pozzolana, after the town of Pozzuoli, whose extraordinary tenacity rivals that of the living rock. You can plant your feet upon the very stones upon which the apostle must have stood. And if you happen to be there on the 3d of May you will see a solemn procession of the inhabitants of the decayed town, headed by their priests, celebrating the anniversary of this memorable incident. The first conspicuous object upon which the eye of the apostle would rest on landing would be the Temple of Neptune, of which a few pillars are still standing in the midst of the water. Here Caligula, in his mad passage over his bridge of boats, paused to offer propitiatory sacrifices. Here, too, Caesar, before he sailed to Greece to encounter the forces of Antony at Actium, sacrificed to Neptune; and here the crew of every ship presented offerings, in order to secure favouring winds and waves when outward bound, or in gratitude when returning home from a successful voyage. Beyond this he would see in all its splendour the famous bathing establishment built over a thermal spring near the sea, which has since been known as the Temple of Serapis, an Egyptian deity, whose worship had spread widely in Italy. Three tall columns of cipollino marble, belonging to the portico of this building, are still standing, with their bases under water; and they have acquired a world-wide interest, especially to geologists, as records of the successive elevations and depressions of the coast-line during the historical period; these changes being indicated on their shafts by the different watermarks and the perforations of marine bivalves or boring-shells well known to be living in the Mediterranean Sea. In the upper part of the town, on a commanding height,