Are the Planets Inhabited?

by E. Walter Maunder

[5] Ibid., p. 22.

[6] Other Worlds, by Garrett P. Serviss, pp. 63-4.

[7] Modern Painters, by John Ruskin.

[8] If this experiment could be carried out, it would be necessary to use a spring balance. If the object were weighed in a pair of scales or by a steelyard, the counterbalancing weights would be likewise affected in the same proportion, so that the equilibrium would be undisturbed.

[9] The movements of not a few double stars point to perturbations caused by the attraction of unseen bodies. There are also a number of instances known of “Eclipse” or “Algol-type” variable stars, in which the presence of a dark companion is indicated by the diminution of the light of the star at regular intervals.

[10] Proc. R. Soc., LXXX, 50, 1907.

[11] Nature, LXXX, 158 (April 8th, 1909).

[12] “Periodic Changes upon the Moon,” Memoirs, British Astronomical Association, Vol. XIII, p. 88.

[13] The Moon, by Philip Fauth, p. 156.

[14] Radiation in the Solar System: Its Effects on Temperature, and its Pressure on Small Bodies, by Dr. J. H. Poynting (Phil. Trans. of the Royal Society, Vol. 202 A).