A History of Magic and Experimental Science, Volume 2 (of 2) / During the First Thirteen Centuries of Our Era

by Lynn Thorndike

[2719] Diepgen (1909), p. 25.

[2720] Medic. Introd. Spec., cap. 20.

[2721] Repetitio super Canon ‘Vita Brevis’, fol. 276.

[2722] De conserv. iuvent. et retard. senectute, “Palam autem est quia obiectum politicum et diaffanum est aggregatum visus eius congregans disgregatum.”

[2723] Bernard’s mention of eye-glasses in his Lilium medicinae, Venice, 1496, Partic. III, cap. v, fol. 94, is both more incidental and more specific. At the close of his “ninth experiment” for the eyes, a formidable mixture, he says, “et est tantae virtutis quod decrepitum faceret legere litteras minutas sine ocularibus.” Magnifying lenses have of course been mentioned earlier by Grosseteste; see above p. 441.

Bernard Gordon also mentions “experimenters,” Lilium V, 12, fol. 159, “et dicunt experimentatores.”

[2724] Breviarium, I, 26.

[2725] Ibid., I, 13.

[2726] Tractatus contra calculum.

[2727] Antidotarium.