1] INTRODUCTION 29 
three altitudes respectively. In 1909, the coldest days were 
(1) February 12th, when — 2°2°, —3°6°, and —5:6° C. respectively 
were registered, (2) March 4th, when — 5:0° and — 6:1° C. were 
At 335 metres At 500 metres At 750 metres 
Degrees Degrees 
1908 i . C. Days?! Pha C. 
January 2°3 11 
February 25 3°5 0°5 
March 23 3'1 0-1 
April 25 59 2-0 
May 25 12:4 83 
June 26 15:1 10°7 
July 22 20°1 116 
August 20 13°0 9°7 
September 25 1271 8°7 
October 26 11°7 10°2 
November 25 56 4:0 
December 27 3°4 271 
Average 25 5°8 
1909 
January 25 - 0-2 
February 24 —O1 
March 27 — 0-2 
April 22 3°6 
May 24 6°8 
June 24 6°6 
July 25 10-0 
August 20 9°7 
September 26 8:1 
October 23 59 
November 22 11 
December 24 0-9 
Average 24 4:4 
1 The numbers in these columns represent the number of days on which 
readings were taken. No readings were taken on Sundays; and occasionally 
readings could not be taken on other days, sometimes owing to accidents to the 
kites and balloons, and occasionally owing to requests from the landowner 
during the grouse-shooting season. 
