The attendant in the Whispering Gallery tells us to put our ears against the side wall, and he would whisper to us and exhibit this accidental wonder. He, being opposite, against the wall, says in a whisper: "This Cathedral was built by Sir Christopher Wren, and was finished in the year 1710. This dome is, &c., &c." All was as distinctly heard as if we were by his side. We had heard for ourselves the wonder. We had experienced all that any one can experience, so far as the material work is concerned. When we put our name on the visitors' book we felt that we did more than that, for we joined the company of those who for two and a half centuries have been doing as we did. As long as mind endures, as often as the hand of thought reaches out, it must gather whether it will or not. It is not far from 6 P. M. of this Sunday. Service is being held, and the great nave is half filled. The audience are trying to hear, and a part of them are sincerely worshipping; the remainder, like ourselves, are "seeing the cathedral." The sounds were confused and the echo troublesome, though not so much so as at other places. We were favorably impressed with the great length of the cathedral, and with its general look of vastness,--not awe-stricken, but filled with delight at the privilege we were enjoying in being in great St. Paul's. The large piers and arches, and the arched ceiling (tunnel-like, but here and there pierced with small and too flat domes), all appeared heavy and substantial,--built to last. Elegant colored-glass windows are about the apse, or chancel end, but the others are of small square lights of clear glass. A common square black and white marble tiled floor; monuments and tablets here and there against the columns and walls; an elegant oak organ-case, in two parts, on the side walls of the choir, and just back of the high, iron screen-work that separates the choir from the nave; the rich oaken stalls,--these make up the interior of St. Paul's. The great central dome has dim paintings by Sir James Thornhill, done at the time the cathedral was built. Seen, as the inside of the great dome is, through smoke, which the rays of light from the large windows above penetrate and make visible (this effect is ever present during the light), the great dome awakens a feeling of solemnity. We felt something of what we were contemplating. The shades of night were falling; the assembly had broken up, and here and there were solitary visitors, moving about weird-like in the dim light as if loth to leave. We at length passed out, and returned to our lodgings at West End. What ground has been gone over between the hours of 4 and 8 P. M. Hyde Park, Westminster Abbey and Bridge, Parliament Houses, the almost classic river, a look at St. Paul's,--and we are at home and resting.