crystal, rock, [48], [52], [59], [111]

Curtius, Nicolaus, [35].

Cusan (Michael Khrypffs), Cardinal de Cusa, [3], [64], [108].

Cynosure, the, or Pole-star, [14], [81], [117], [222], [235].

Dean, Forest of, loadstone found in the, [11].

decay of the magnetick virtue, [18], [37], [124], [138], [149].

declination, the, or dip, [184].

denarius of Antony, [110].

diamond, an electrick, [48], [50], [59], [111].

alleged power to attract iron, [109], [112].