[175] Charles II was then at Breda, and so were the Scottish Commissioners. Montrose was executed in Edinburgh on May 21st, 1650, and the Treaty of Breda had been signed on May 3rd, pledging Charles to uphold the Covenant; but at this very time he was still using the Service Book, and Breda itself was the gay scene of nightly “balling and dancing.” [176] Cary. [177] _Philaretus._ [178] The heroine of _Seraphick Love_. [179] Robert Boyle’s brother Francis was his heir presumptive. [180] This may have been young Lord Barrymore’s second wife, daughter of Henry Lawrence. [181] _Philaretus._ [182] Colonel Lawrence’s account, quoted by Bagwell. [183] Chalked up on the door of the House of Commons. [184] Bagwell. [185] _Some Worthies of the Irish Churches_, by G. T. Stokes, D.D., ed. by Dr. Lawlor, p. 74. [186] Birch’s _Life_. [187] Letter from Hartlib to Boyle; Birch’s ed. _Works_, vol. vi. [188] The _Encænia_. [189] The _Sheldonian_ was not then in existence. [190] Kendal. [191] Afterwards Bishop of Lincoln. [192] Cp. Evelyn’s _Diary_, August 6, 1657: “I went to see Col. Blount, who shewed me the application of a _way-wiser_ to a coach, exactly measuring the miles and shewing them by an index as we went on ... very pretty and useful.” [193] Birch’s _Life_. Lady Ranelagh’s letter is dated merely “Oct. 12.” It must have been written in October 1653, after Boyle was back in Ireland, or so late as 1654, before Boyle left Ireland for good. [194] Birch’s _Life_. [195] Evelyn’s letter to Dr. Wotton, 1703. [196] Birch’s _Life_. [197] Boyle’s _Occasional Reflections_ were not published till 1665, but it is probable they were well known in manuscript. [198] Bishop of Lincoln, after the Restoration. [199] Robert Boyle to Lord Broghill: Birch’s _Life_; afterwards used as _Epistle Dedicatory to the Considerations on the Style of the Scriptures_. [200] Birch’s _Life_. [201] Of Freshwater, in the Isle of Wight. [202] Boyle’s Law, confirmed by Mariotte in 1676: “The volume of any given sample of a gas at constant temperature is inversely proportional to the pressure.” [203] Hooke’s Law, 1676: _Ut tensio, sic vis_; “Strain is proportional to stress.” [204] Published Oxford, 1660. [205] Birch’s _Life_. [206] Attacked by Hobbes and Franciscus Linus; 2nd ed. London, 1662; 3rd ed. London, 1682. [207] Oh Morning Star! give back the Day; Why dost thou delay our joys? Oh Morning Star! give back the Day! [208] _An Essay towards a Real Character and a Philosophical Language_, published in folio, 1668. (The MS. was lost in the Fire of London.) [209] Birch’s ed. _Works_. [210] Boyle’s Law is not _strictly_ applicable, if all modern refinements of experiment are used, to any gases except an “ideal” gas; but for all practical purposes it is exact, because the corrections to it are only minute additions, and not alterations.