Scientific Facts Which May Induce Little Comfort Like the patent barometer whose quaint figures come out of their house and register "fair and warm. er" for all they are worth when the rain shows no sign of stopping, the news-gatherer sometimes finds that no sooner does he attempt. few topical comments on the "drought" than the monsoon rains set in, Thereafter he can only hope a fow remarks on the subject of humidity will ease the downpour.
Siccawei Observatory intimated on Tuesday that the saturation point at the present time is 97 per cen tthe maximum point being the usu 100 per cent, which hgs been reached frequently in the past few days et Gam. It is further explained by those" who compile data about Shanghai's humidity that the highest recorded humidity here has' een 33 grams of water vapour in 4 cubic metre of air, The absolute humidity average per month, on the other hand, is about 16 grams of water vapour to the cubic metro of air; and the lowest on record only four grams.
When the percentage is spoken of, it means the relative humidity or the proportion between the actual amount of moisture in the air and the maximum amount which the air can hold, and the latter depends very much ' on the temperature, being almost zero at freezing point and about 40 glams per" cubic metre when the temperature is 90 degrees F.
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