[201] Fragments of Science and Scientific Thought, p. 163.

[202] Illustrations of Progress, page 292.

[203] Illustrations of Progress, page 34.

[204] The Earth, page 256.

[205] Taylor's Scientific Memoirs, Vol. V., cited in McCosh's Typical Forms and Special Ends in Creation, p. 403.

[206] Opening Address to the British Association, 1845.

[207] Taking water as the unit of density, Mercury is 6.71; Venus, 5.11; Earth, 5.44; Mars, 5.21; Saturn, 0.76; Uranus, 0.97; Neptune, 1.25; the Sun, 1.37.—Cosmos IV. p. 447.

[208] Newton's Optics, IV. p. 438.

[209] Cosmos, IV. p. 425.

[210] Cosmos, III. p. 28.