The Appropriate Seasons for Snow spite of the popular superstition that a fall of snow before the first moon of the Chinese New Year significance, it would seem from an examination of statistics that the recent three falls are nothing out of the ordinary. According to the standard Chinese Meteorological calendar the 21st and 22nd fortnightly periods which occur at the latter part of November and the beginning of December are appropriate seasons for snow. calendar was prepared for the region of the Yellow River and is tly applicable to Shanghai. However, at. present we fare at the period of lesser frigidity Jand there is nothing extraordinary in the snowfall occurring there. Past records show that snow may fall in Shanghai as early as November 2 or even as late as May 24, 30 that there is nothing very unusual in the present fall The actual incidence of rain or snow is much dependant on the wind Jand the circulation of air. This being quite erratic, it is almost impossible to prophesy' when or where snow will vecur in such a low latin tude as Shanghai.
The mean temperature for January 8 averaged over a long period of years is 39 dog. F. but in 1917 on the same date it fell as low as 14 deg. Snow usually cannot occur except when the lower than 32 de
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