Note 369 — Chapter IV · The Gradual Acceptance of the Copernican System.
Reading edition
One London bookseller in 1670 advertised for sale "spheres according to the Ptolmean, Tychonean and Copernican systems with books for their use." (Moxon: 272.) In 1683 in London appeared the third edition of Gassendi's Institutio, the textbook of astronomy in the universities during this period of uncertainty. It too wavers between the Tychonic and the Copernican systems.