nomical Board, an appointment which, owing to the jealousies aroused, very nearly cost him his life. What he taught was hardly superior to the astronomy then in vogue, which had been inherited from the Mongols, being nothing more than the old Ptolemaic system, already discarded in Europe. In 1669, a Flemish Jesuit Father from Courtrai, named Verbiest, was placed upon the Board, and was entrusted with the correction of the calendar according to more recent investigations.
Christianity was officially recognized in 1692, and an Imperial edict was issued ordering its toleration throughout the empire. The discovery of the Nestorian Tablet in 1625 had given a considerable impulse, in spite of its heretical associations, to Christian propagandism; and it was estimated that in 1627 there were no fewer than thirteen thousand converts, many of whom were highly placed officials, and even members of the Imperial family. An important question, however, now came to a head, and completely put an end to the hope that China under the Manchus might embrace the Roman Catholic faith. The question was this: May converts to Christianity continue the worship of ancestors? Ricci, the famous Jesuit, who died in 1610, and who is the only foreigner mentioned by name in the dynastic histories of China, was inclined to regard worship of ancestors more as a civil than a
