420 
BULLETIN OF THE NATURAL HISTORY SOCIETY. 
of some of the enthusiastic younger members. Unable myself, 
for obvious geographical reasons, to make any seasonal tempera- 
ture measurements, but greatly desiring some information upon 
the subject, I recently enlisted the aid of some relatives of mine 
in St. Stephen, who made weekly measurements as often as 
practicable through the winter of 1910-11. The measurements 
were made by my brother, Mr. J. E. Ganong, who was ably 
T assisted, and I suspect kept up to his task, by my young niece, 
Miss Jean Webb Ganong, and my nephew, Master J. Edwin 
Ganong, Jr. The temperatures were taken with a standardized 
Centigrade thermometer, read after an immersion of several 
minutes in the spring itself, and checked by a reading in a dish 
of water taken quickly therefrom. The spring is a constantly- 
flowing one lying on the easterly slope of a place known to the 
youth of the region as “Tiger Hill,” a little beyond and northeast 
of the last house on Elm Street, St. Stephen. 
/0‘ 
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Up 
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3 10 Jif Jt / /y 21 2t 9 II /S 2S JL 7 71 23 JO & 73 Jo 27 If // /» 3-S~ / t 7i ' 2if 3' 72 19 21 S' 72 71 Ji J. 7 H 23 JO 7 /If 21 Jr if H It 23' 2. 
19/OJvly Juyust Sept r Octx Aov- r Dec r Ja-rt y . Teh? March .April May Jane t9// 
The results are incorporated in the accompanying graph, 
in which the dots represent the readings. The cotemporaneous 
air readings are omitted because taken only a part of the time. 
I have no question as to the substantial accuracy of the figures, 
and the unexpected fluctuations they show are unquestionably 
genuine. However, the data are obviously too scanty to have 
any appreciable value as a contribution to a knowledge of this 
subject, but I present them as an illustration of method, and a 
foundation for further studies. Of course they should be carried 
through the entire year, at weekly intervals at least, and the 
cotemporaneous air temperatures should be recorded with equal 
care, as should the daily temperatures, and other marked features 
