Still Perplexed
Sir, — In your answer to ' ' Somewnat Puzzled" you state that a year ago the frost measurement was reduced by two degrees. Does this mean that all readings in New Zealand before this wero wrong? If not, why has it been altercd! — Yours, 32D. FREEZING POINT. Hastings, July 28, 1937. [As already explained, the freezing pomt for purposes of frost rocording was reduced from 32 degrees to 30.3 degrees. The change was made by Dr. Kidson, of the Dominion Observatory, Wellington, about a year ago. His aim was to strike a medium between the minimum temperature on the grass and the minimum on the screen. There is always about 10 or 12 degrees difference between these two readiugs. Dx Kidson 's argument in altering the readings was that people did not feel the frost above the ground at the same intensity as dt was upon the actual surface of the ground. His method of frost recording is used only in New Zealand and it has created a certain amount of confusion since it was introduced. — Ed.]
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Hawke's Bay Herald-Tribune, Issue 164, 29 July 1937, Page 3
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177Still Perplexed Hawke's Bay Herald-Tribune, Issue 164, 29 July 1937, Page 3
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