Oct. 22 [1645] Petition of Sarah Delamain, relict of Richard Delamain. Petitioner’s husband was servant to the King, and one of His Majesty’s engineers for the fortification of the kingdom, and his tutor in mathematical arts; but upon the breaking out of the war he deserted the Court, and was called by the State to several employments, in fortifying the towns of Northampton, Newport, and Abingdon; and was also abroad with the armies as Quartermaster-General of the Foot, and therein died. Petitioner is left a disconsolate widow with ten children, the four least of whom are now afflicted with sickness, and petitioner has nothing left to support them. There are several considerable sums of money due to the petitioner, as well from the King as the State. Prays that she may have some relief amongst other widows. See L. J., VII. 6. 657. [25]Anthony Wood, Athenae Oxonienses (Edition Bliss) Vol. IV., London, 1820, p. 34. [26]The New Artificial Gauging Line or Rod: together with rules concerning the use thereof: Invented and written by WILLIAM OUGHTRED, etc., London, 1633. The copy we have seen is in the Bodleian Library, Oxford. The book is small sized and has 40 pages. [27]Oughtred, op. cit., p. 11. [28]S. J. Rigaud, Correspondence of Scientific Men of the 17th Century, Oxford, Vol. I, 1841, p. 17. [29]Rigaud, loc. cit., p. 22. [30]Rigaud, loc. cit., pp. 30, 31. [31]Oughtred, An Addition vnto the Vse of the Instrument called the Circles of Proportion, London, 1633, p. 63. [32]F. Cajori, History of the Slide Rule, New York, 1909, pp. 16-22, Addenda, pp. vi-ix. [33]W. Leybourn, op. cit., 1673, Preface, and pp. 128-29. [34]Cajori op. cit., Addenda, p. ix. [35]William Leybourn, op. cit., 1673, p. 35. [36]See Cajori, op. cit., pp. 20, 28, Addenda, p. ix. [37]See F. Cajori, “A Note on the History of the Slide Rule,” Bibliotheca mathematica, 3 F., Vol. 10, pp. 161-163. [38]John Atkinson, op. cit., 1694, p. 204.