Alb. 215

c Biographia Brittanica, vol- v.

Vol. L 67'

?-• .

530 HISTORY OF THE

In 1630, lie wrote and published his Modus Suppiitandi, Ephemerides, Astronomicas, also a key to unlock the meaninor of Johannes Trithimius, and a discourse on Steganography. He had previously written a description and use of the Quadrant. His great patron at this time, was the Prince of Orange, who presented him with tlie professorship of mathematics, at Breda in Holland.

In Af)ril, 1654, he received his appointment from Oliver Cromwell, as English resident Ambassador to the Swiss cantons.

The Pell papers in the Lansdowne and Birch collections afford interesting illustrations of Dr. PelPs domestic and literary character.

These papers contain numerous letters from Sir William Moorland, Sir William Lockharr, Sir William Cavendish, Secretary Thurloe and other distinguished men of that day to Dr. Pell.

To which is appended Dr. Pell's diary during his residence at Zurich.

The latter commences thus : " April 5th, dismissed my Lord Protector, supped with my wife and bade her adieu."

The first article in his correspondence (as ambassador) opens with a letter to Mr. Secretary Thurloe, dated Utrecht, April 20th, old style, 1654.^

In a letter from Mr. Moorland, to the Right Hon. John Pell, dated, Whitehall, January 15th, 1656-7, he makes the following allusion to the family of the latter : " to-morrow, God willing, I shall not fail to go and present your^ue children with five gold angels according to your order, as I have this evening^ sent her ladyship a note, though it were after I received the enclosed from her to you," (fee. &c.