Shaping their course towards the north-east angle of the fortress, they stopped before a small turret, at that time called the Martin Tower, and used as a place of confinement for state offenders, but now denominated the Jewel Tower, from the circumstance of its being the depository of the regalia. “Within that tower are imprisoned the Catholic Bishops Gardiner and Bonner,’” remarked Arundel.. “Let Mary win the crown, and it shall be tenanted by the protestants, Cranmer and Ridley,” muttered Renard. While the others returned to the Green, Renard lingered for an instant to contemplate the White Tower, which is seen perhaps to greater advantage from this point of view than from any other in the fortress. And as it is in most respects unchanged,—excepting such repairs as time has rendered necessary, and some alterations in the doorways and windows, to be noted hereafter,—the modern visitor to this spot may, if he pleases, behold it in much the same state that it appeared to the plotting Spanish ambassador. 0104 Rising to a height of nearly a hundred feet; built in a quadrangular form; terminated at each angle by a lofty turret, three of which are square, while the fourth, situated at the northeast, is circular, and of larger dimensions than the others; embattled; having walls of immense thickness, exceeding fourteen feet, and further strengthened by broad flat buttresses, dividing the face of the building into compartments; lighted by deep semi-circular-arched windows;—this massive stronghold, constructed entirely of stone,—and now in some parts defaced by a coating of mortar and flints,—occupies an area of an hundred and sixteen feet on the north and south, and ninety-six on the east and west. At the south-east corner is a broad semi-circular projection, marking the situation of St. John’s Chapel, already described. The round turret, at the north-east angle, was used as an observatory by the celebrated astronomer, Flamstead, in the reign of Charles the Second. The principal entrance was on the north, and was much more spacious than the modern doorway, which occupies its site. At the period of this chronicle the White Tower was connected, as has already been mentioned, on the south-east with the ancient palace. On the south stood a fabric called the Jewel-house; while at the south-western angle was another embattled structure of equal elevation and dimensions with the By-ward Tower and the other gates, denominated the Coal-harbour Tower. These, with the Lanthorn Tower and the line of buildings extending in an easterly direction towards the Broad Arrow Tower, have totally disappeared, and the White Tower is now disconnected with every other edifice. For centuries it has stood, and for centuries may it continue to stand! Within its walls the old monarchs of England have held their councils,—within its vaults prisoners have sighed,—from its gates queens have come forth to execution!—Long may it flourish as a fearful memento of the past!