xviii CONTENTS. 



No. Page 



25. Thomas Lydyat to Henry Briggs, July 4th, 1623 ... 47 



26. Thomas Man to Thomas Lydyat, April 19th, 1625 ... 49 



27. Thomas Lydyat to Thomas Man, May 12th, 1625 . . . 50 



28. Thomas Lydyat to Sir Henry Martin, Oct. 17th, 1626 . 54 



29. Henry Briggs to John Pell, Oct. 25th, 1628 55 



30. Thomas Lydyat to Henry Briggs, Oct. 31st, 1628 ... 58 



31. A paper on the weight of water by the Duke of Northum- 



berland 59 



32. Christopher Potter to William Boswell, Mar. 28th, 1632 . ib. 



33. Thomas Lydyat to William Boswell, April 4th, 1632 . . 61 



34. Thomas Lydyat's petition to Charles the First .... 63 



35. Thomas Lydyat to the Archbishop of Canterbury ... 64 



36. Walter Warner to Robert Payne, Oct. 17th, 1634 ... 65 



37. Robert Payne to Walter Warner, June 21st, 1635 . . . ib. 



38. Sir Charles Cavendish to Walter Warner, May 2nd, 1636. 66 



39. The same to the same, Sept. 2nd, 1636 67 



40. Robert Payne to Walter Warner, Oct. 3d, 1636 .... ib. 



41. Thomas Lydyat to Mr. Rouse, Aug. 2nd, 1638 .... 70 



42. Nathaniel Torporley to the Duke of Northumberland, 



July 5th, 1632 71 



43. Sir Charles Cavendish to John Pell, Jan. 8th, 1641 . . . 72 



44. The same to the same, Feb. 5th, 1641 ib. 



45. The same to the same, June 26th, 1641 73 



46. The same to the same, July 24th, 1641 ib. 



47. The same to the same, Nov. 20th, 1641 74 



48. The same to the same, Dec. 18th, 1641 ib. 



49. Robert Pink to Thomas Lydyat, Nov. 13th, 1641 . . . 75 



50. Sir Charles Cavendish to John Pell, Jan. 20th, 1644 . . 76 



51. The same to the same, Jan. 31st, 1644 ib. 



52. The same to the same, March 26th, 1644 .77 



53. The same to the same, July 26th, 1644 78 



54. The same to the same, Aug. 18th, 1644 79 



55. John Pell to Sir Charles Cavendish, Aug. 7th, 1644 . . ib. 

 ^56. Sir William Petty to John Pell, Aug. 14th, 1644. ... 81 



57. Sir Charles Cavendish to John Pell, Aug. 26th, 1644 . . 83 



