Vol. III (ff. i + 392). includes: f. 18 Johann Heinrich Rahn, the elder; Swiss mathematician: Letter to: 1654: Lat. f. 20 Jacobus a Wassanaer: Mathematical problems: 17th cent.: Dutch. f. 21 Sir Samuel Morland, 1st Baronet; diplomatist and mathematician: Note by J. Pell on the cyclometrical pa...