23 August 1666 – 29 August 1666

Waited on Sir William D'Oyly, now recovered, as it were, miraculously. In the afternoon, visited the Savoy Hospital, where I stayed to see the miserably dismembered and wounded men dressed, and gave some necessary orders. Then to my Lord Chancellor, who had, with the Bishop of London and others in the commission, chosen me one of the three surveyors of the repairs of Paul's, and to consider of a model for the new building, or, if it might be, repairing of the steeple, which was most decayed.

The contagion still continuing, we had the Church service at home.

I went to St. Paul's church, where, with Dr. Wren, Mr. Pratt, Mr. May, Mr. Thomas Chicheley, Mr. Slingsby, the Bishop of London, the Dean of St. Paul's, and several expert workmen, we went about to survey the general decays of that ancient and venerable church, and to set down in writing the particulars of what was fit to be done, with the charge thereof, giving our opinion from article to article. Finding the main building to recede outward it was the opinion of Chicheley and Mr. Pratt that it had been so built ab origine for an effect in perspective, in regard of the height; but I was, with Dr. Wren, quite of another judgment, and so we entered it; we plumbed the uprights in several places. When we came to the steeple, it was deliberated whether it were not well enough to repair it only on its old foundation, with reservation to the four pillars; this Mr. Chicheley and Mr. Pratt were also for, but we totally rejected it, and persisted that it required a new foundation, not only in regard of the necessity, but for that the shape of what stood was very mean, and we had a mind to build it with a noble cupola, a form of church-building not as yet known in England, but of wonderful grace. For this purpose, we offered to bring in a plan and estimate, which after much contest, was at last assented to, and that we should nominate a committee of able workmen to examine the present foundation. This concluded, we drew all up in writing, and so went with my Lord Bishop to the Dean's.

Sat at the Star-chamber. Next day, to the Royal Society, where one Mercator, an excellent mathematician, produced his rare clock and new motion to perform the equations, and Mr. Rooke, his new pendulum.