Garret Hostel itself, together with others, was swallowed up by the gigantic College which we now reach, Trinity. Trinity Bridge, a cycloidal curve carried on three arches, is led up to on either side by the "long walk of limes" sung by Tennyson in "In Memoriam"; and the splendid range of chestnuts which, as we pass beneath it, opens upon us to the north-west, forms the boundary between the paddocks of Trinity and St. John's. On the east rises the vast fabric of Trinity Library built by Sir Christopher Wren, with its magnificent range of arched windows and its warm yellow sandstone, an occasional violet block adding to the effect, a veritable feast of quiet colour, especially when glowing in the evening sun, and contrasting pleasingly with the paler tint of the New Court of St. John's College, which, with its plethora of crocketed pinnacles, here bounds our view to the left front. To the right front rises the square tower of St. John's Chapel, picturesquely reflected in the still waters. A slight bend in the stream, overhung by great elms, brings us to St. John's Bridge, a fine three arched structure of brick and stone built in 1696.[15] Beyond it the College buildings rise, like those of Queens', directly from the water--to the west the white stone abutments of the New Court, to the east the red brick walls and oriel window of the Library, the most beautiful building of its class in either Cambridge or Oxford. On it we can read the date 1624, and the letters I. L. C. S. standing for _Johannes Lincolnensis Custos Sigilli_, which commemorate the benefactor John Williams, Bishop of Lincoln, and Lord Keeper of the Privy Seal, to whose generosity we owe this gem of architecture. In his day, and for long after, St. John's was quite the largest College in Cambridge, rivalled only, for a moment, by Emmanuel. The present supremacy of Trinity did not begin till late in the eighteenth century. [Footnote 15: Sculptures over the piers represent the bridge itself, a very unusual feature.] The river is here spanned by the latest of the College bridges, a single arch of stone high in air, carrying a pathway vaulted over with stone and lighted on either side by grated windows, after the fashion of the "Bridge of Sighs" at Venice. It was built about 1830 to form a communication between the older part of the College on the eastern side of the river and the recently erected New Court on the western, while giving no opportunity for illicit leaving of the College. As has been already stated, students, while bound to be inside the College gates all night, are not bound to keep to their rooms, but may wander about the Courts at any hour. [Illustration: _St. John's Bridge._]