[26] Op. xv. (Viviani), pp. 337 and 389.

[27] Published by Venturi, 1818, vol. i. pp. 26-74.

[28] Op. xv. (Viviani), pp. 339, 340.

[29] Op. xv. (Viviani), pp. 337, 338.

[30] Op. ii. pp. 1-6.

[31] “Prodromus Dissertationum Cosmographicarum.”

[32] Op. vi. pp. 11, 12.

[33] Op. viii. pp. 21-24.

[34] See Humboldt’s “Cosmos,” vol. ii. pp. 345, 346, and 497-499.

[35] Op. xv. p. 390. His salary at first was 72 Florentine zecchini = £18, and rose by degrees to 400 zecchini = £100. (Op. viii. p. 18, note 3.)