Note 343 — Chapter III
Reading edition
Montucla, Hist. des Mathématiques, i. 539. Hutton’s Mathematical Dictionary, and his Introduction to Logarithms. Gassendi, Vita Purbachii. Biogr. Univ. Peurbach (by Delambre). Kästner, Geschichte der Mathematik, i. 529-543, 572; ii. 319. Gassendi twice gives 6,000,000 for the parts of Purbach’s radius. None of these writers seem comparable in accuracy to Kästner.