The Wall Brook at that period was doubtless a stream of some importance, having perhaps a mouth sufficiently broad to make a sort of useful harbour, just off the Thames; hence the necessity of a landing-pier or stage being constructed here for commercial purposes. Nor is this the only one of the kind which the railway-works have brought to light, for a second has been found beneath Trinity Square Gardens, which are situated on the spot known as ‘Tower Hill,’ so celebrated in history as the place of public execution. This second landing-stage also appears to have stood on a bank leading to the river, forming, like the other, a small harbour for the unloading of craft or landing of passengers. This stage is built in the same way—timber-piles supporting a concrete bed, and on this again the usual Roman tile pavement. But it was observed that the oak-piling was surrounded by a number of oak-tree roots, leading to the supposition that the ground had to be cleared of its original forest before the building operations of the landing-stage were begun. This is confirmed by the fact that the spot where these discoveries were made must have been outside the eastern boundary of the original city of London; because a fortress—or work of some kind—was erected by the Romans for the protection of the city on that side, on the site of Gundulph’s still existing ‘Tower,’ and of course _outside_ the town, and surrounded probably at that period by the ‘forest primeval.’ The underground track of this part of the railway has proved a storehouse for relics of both Roman and medieval times. A great deal of pottery has been found, as well as articles of glassware, and even cannon-balls. Two leaden coffins were brought to light of decided Roman pattern; also Roman coins. Amongst the many Roman tiles which were unearthed, one of them bears the distinct mark of a dog’s foot, which can only be explained by the animal having walked over the tile whilst it was still soft after its manufacture. Two entire skeletons were also discovered, each head downwards—one in Trinity Square, and one at the bottom of a well twenty-five feet below the ground, in Aldgate. The remains of the windlass which had once been at the top were also discovered, together with some pieces of broken pottery. A second well was also found near the first; but their age has not been determined.