'The judgement of the Surveyor was originally, instead of painting in the manner it is now performed, to have beautified the inside of the Cupola with the more durable ornament of mosaic work, as it is nobly executed in the Cupola of S. Peter's in Rome, which strikes the eye of the beholder with a most magnificent and splendid appearance; and which, without the least decay of colour, is as lasting as marble, or the building itself. For this purpose he had projected to have procured from Italy four of the most eminent artists in that profession; but as this art was a great novelty in England, and not generally apprehended, it did not receive the encouragement it deserved; it was imagined also that the expense would prove too great, and the time very long in execution; but though these, and all objections were fully answered, yet this excellent design was no further pursued.' In weighing the value of this evidence as to Sir Christopher's views, it is important to remember that the 'Parentalia' was, though edited by Stephen the grandson, actually written by Christopher, the son who was constantly with his father and shared in his interests, and had himself seen, and no doubt described to Sir Christopher that very cupola of S. Peter's, of which he speaks. The question of the iron fence round the Cathedral, of which Wren made mention in his petition, was much in his thoughts; he wished it to be low, and made of hammered iron, the Commissioners were determined that it should be high, and made of cast iron. Wren, who doubtless intended to employ Tijou, and have a low, graceful railing which would throw up the height and solid grandeur of the Cathedral, repeatedly expressed his opinion; but the majority overruled him, and the Cathedral was imprisoned by a high, heavy, clumsy fence, the gates of which were sedulously closed, and were but too apt an emblem of the manner in which the Cathedral was soon shut off from its true uses. A century later, and Bishop Blomfield could say, 'I never pass S. Paul's without thinking how little it has done for Christianity.' Now the iron fence has departed,[239] and with it all possibility of such a reproach. During all this time Wren was engaged on the Abbey repairs and the affairs of Chelsea College. The Duke of Ormonde sends him a summons in November, 1713, the more pressing, as several Commissioners are out of town, to meet him 'at twelve of the clock at his Grace's house at the Cockpitt, in order to give directions for the cloathing of the Invalide Companys who are in a perishing condition for want thereof, not having been cloathed for near these three years past.' The death of Evelyn and that of Sir Stephen Fox had lost to Chelsea Hospital its two best friends, but doubtless the Duke and Sir Christopher were able to provide for this emergency.