[2] Memoir on the substance of fire, considered as a chemical agent in analysis.—Journal de Physique, Floreal, An. vii.

[3] Memoir on the substance of sound.—Journal de Physique, 16 & 26 Brumaire, An. vii.

[4] Animaux sans vertébres, vol. i. p. 188, 189.

[5] Animaux sans Vertébres, vol. i. p. 197, 198.

[6] Ib. p. 199.

[7] Ann. du Museum d’Hist. Nat., tom. i. p. 234.

[8] Lyell’s Principles of Geology, ii. p. 31.

[9] Principles of Geology, ii. p. 8.

[10] This subject will be found to be discussed at considerable length, and in a very satisfactory manner, in the second volume of Mr. Lyell’s Principles of Geology, p. 1-65.

[11] Animaux sans Vertébres, i. p. 260.