Page:Mars - Lowell.djvu/284

214 {| border="0" cellpadding="2" style="margin-left: 30px" While the probable maximum speed of the molecules of some of the common gases at 0° Cent. are as follows:—
 * - align="center"
 * align="left" | Mars || align="right" | 3.1 || miles || a || second.
 * - align="center"
 * align="left" | Jupiter || align="right" | 37. || " || " || " || (mean || value).
 * - align="center"
 * align="left" | Saturn || align="right" | 22. || " || " || " || " || "
 * - align="center"
 * align="left" | Uranus || align="right" | 13. || " || " || " || " || "
 * - align="center"
 * align="left" | Neptune || align="right" | 14. || " || " || " || " || "
 * - align="center"
 * align="left" | Sun || align="right" | 382. || " || " || "
 * }

The change in the apparent size of the equatorial diameter as compared with the polar one as the phase increased, suggesting the unconscious measurement of a twilight upon the planet, becomes still more striking when, in addition to the October-November measures mentioned in the text, the measures from July to October are considered in connection with them. Tabulated chronologically, the whole are as follows:—