Thermometers and hygroscopes were first introduced into China in the middle of the seventeenth century by Ferdinand Verbiest16 (1623-1688), a disciple of Tycho Brahe (1546-1601). Verbiest entered China in the year 1659. From that year until his death he received numerous favors and honors from the Emperor Kan-Si [sic]. For several years he held the post of President of the Board of Mathematics and AstronomyWhat I do know empirically is that it was -8 degrees F this morning in Changchun. We have had more snowfall this year already than I witness cumulatively in the previous two winters. I cannot see out the balcony windows because the condensation has totally occluded them.