his error as to variation and longitude, [166].

præcession of the Æquinoxes, [234], [236].

primum mobile, the, [79], [214], [216], [218], [220], [226], [232], [237].

prostaphæresis, [174], [236].

Prutenical Tables, the, [235].

Ptolemæus, Claudius.

on loadstone fables, [2], [32].

on the occurrence of loadstone and of iron, [9],[25].

on the dissolution of the earth, [91], [217], [218].

alleged relation of regions with the planets, [137].