Note 3 — EVENTS IN THE PHILIPPINES, 1643–44
Reading edition
The Chinese government entrusted to Jesuit missionaries the task of reforming the Chinese calendar; the chief of these were Johannes Adam Schall von Bell (in China during 1622–69), Giacomo Rho (or Ro; at Pekin, 1631–38), and Ferdinand Verbiest (in China, 1659–88)—all men of renowned ability as astrologers and mathematicians.