... an earlier stage in the enquiry, when Kepler was investigating the distances at various positions on the eccentric and discovering that they are shorter at the quadrants. ... After filling that page, he would then have continued the notes on a new sheet (P358), numbering its recto 532. ... These pages contain the development of the physics and the geometry of the oval. ... The Mars notebook, as we have it, continues for another two folia, breaking off in mid-sentence on K538 = P360V.
|Title||:||Journal for the History of Astronomy|