28 June 1666 – 4 July 1666

Came Sir John Duncomb and Mr. Thomas Chicheley, both Privy Councillors and Commissioners of His Majesty's Ordnance, to visit me, and let me know that his Majesty had in Council, nominated me to be one of the Commissioners for regulating the farming and making of saltpetre through the whole kingdom, and that we were to sit in the Tower the next day. When they were gone, came to see me Sir John Cotton, heir to the famous antiquary, Sir Robert Cotton: a pretended great Grecian, but had by no means the parts, or genius of his grandfather.

I went to sit with the Commissioners at the Tower, where our commission being read, we made some progress in business, our Secretary being Sir George Wharton, that famous mathematician who wrote the yearly Almanac during his Majesty's troubles. Thence, to Painters' Hall, to our other commission, and dined at my Lord Mayor's.

The solemn Fast-day. Dr. Meggot preached an excellent discourse before the King on the terrors of God's judgments. After sermon, I waited on my Lord Archbishop of Canterbury and Bishop of Winchester, where the Dean of Westminster spoke to me about putting into my hands the disposal of fifty pounds, which the charitable people of Oxford had sent to be distributed among the sick and wounded seamen since the battle. Hence, I went to the Lord Chancellor's to joy him of his Royal Highness's second son, now born at St. James's; and to desire the use of the Star-chamber for our Commissioners to meet in, Painters' Hall not being so convenient.