When all was finished, the mayor and corporation came in state to inspect the new building, and to stamp with their approval another of the great architect's works. Much seems to have been approved of, but one member of the municipality declared in alarm that the room above the vaulted space was inadequately supported and would one day fall in. [_ADDITIONAL PROPS._] In vain Wren, who had built vault after vault and knew to a nicety what weight each of his arches would bear, explained the perfect security of the upper room; the anxious man could not be pacified and the architect promised to put two columns below. He did so, and the alderman was calmed, little knowing that Sir Christopher's columns when complete had about half an inch of space between themselves and the ceiling they were supposed to support! Wren must many a time have laughed to himself when he passed that way. Two other buildings of his, one of which is called 'the Bank House,' stand in Windsor not far from what are known as 'The Hundred Steps.' There is another house there of his design, now used by the freemasons and the volunteers. Wren sent his eldest son to Eton, where the boy was at this time, and afterwards to Pembroke College, where his name alone was a recommendation. In 1689 Wren finished building the College of Physicians in Warwick Lane; as far as the confined space would admit, the front was handsome, but the dome and its ornament provoked the satire of Garth in the opening lines of his 'Dispensary':[203] Not far from that most celebrated place,[204] Where angry justice shows her awful face, Where little villains must submit to fate That great ones may enjoy the world in state; There stands a dome majestic to the sight, And sumptuous arches bear its oval height; A golden globe, placed high with artful skill Seems, to the distant sight, a gilded pill. Whatever its exterior defects may have been, the theatre within was arranged with masterly skill so as to enable all the students to see and hear during the lectures and demonstration. The difficult science of acoustics was one to which Wren gave much attention, and his churches are, in this respect, very successful. The Physicians retained the college Wren built for them until very recent times, when they moved into the present building which does not adorn Trafalgar Square. Not all the Halls belonging to the City Companies perished by the fire, though many suffered severely. Wren, and Jarman, the City Architect, rebuilt and repaired some seventy-nine of them.[205] Of these, a large number have been altered or pulled down, but a few may be mentioned.