It is stated that the names of the five planets of the Chinese, besides the Sun and Moon, were called by the same names as in Babylon. (See Edkins _op. cit._, also The old Babylonian characters and their derivatives, Terrien de Lacouperie, Babylonian and Oriental Record, March, 1888.) Some authorities are inclined to consider Chinese astronomy as derived from the Chaldean; whilst others have instituted comparisons between it and the Hindoo system. The results of the latter line of investigation are set forth by J. F. Davis in the following passage of his work on the Chinese (London, 1836, vol. II., p. 304): “A comparison between the ancient system of the Chinese and of Hindoo astronomy is rendered somewhat perplexing by the fact that, while there are some points of resemblance there are others in which they essentially differ. Both of them have twenty-eight lunar mansions and a cycle of sixty years, but a careful observation detects some important distinctions: the Hindoo cycle is a cycle of Jupiter while that of the Chinese is a solar cycle, and the twenty-eight constellations of the Hindoos are nearly all of them equal divisions of the great circle, consisting of about 13° each, while the Chinese constellations are extremely unequal, varying from 30° to less than 1°. The author’s father, in conjunction with Sir William Jones and Messrs. Colebrook and Bentley, proved that the Hindoo astronomy did not go farther than the calculation of eclipses and some other changes with the rules and tables for performing the same. Besides their lunar zodiac of twenty-eight mansions, the Hindoos (unlike the Chinese) have the solar, including twelve signs perfectly identical with ours, and demonstrating, in that respect, a common origin.” As we know from Herodotus, the Egyptians had a week of seven days and it is remarkable that the Hindoos had anciently the same, the planetary names being given to the days in exactly the same order as among ourselves, except that Friday was the first. The Chinese reckon five planets to the exclusion of the sun and moon, but they give the name of one of their twenty-eight lunar mansions successively to each day of the year in a perpetual rotation, without regard to the moon’s changes; so that the same four out of the twenty-eight invariably fall on our Sundays and constitute, as it were, perpetual _Sunday letters_. A native Chinese first remarked this odd fact to the author, and on examination it proved perfectly correct.