OBSERVATIONS ON SOILS. 
37 
OBSERVATIONS 
ON THE TEMPERATURE ON THE SOIL, AT HOOSIC FALLS, RENSSELAER COUNTY, NEW-YORK. 
By L. C. Ball, Esq. 
These observations were made daily during the past summer. I have selected only the extremes of each half 
month as reported. Temperature of the soil 4 inches below the surface. 
FIRST HALF. 
SECOND 
half. 
Air. 
Soil. 
Air. 
Soil. 
May. 
Highest,. 
91 
78 
Lowest,. 
54 
52 
Mean. 
764 
67? 
June. 
Highest,... 
85 
80 
101 
90 
Lowest,. 
58 
55 
72 
72 
72| 
94 
65| 
85.? 
8O4 
July. 
Highest,... 
84 
100 
81 
Lowest,. 
72 
66 
70 
63 
Mean,. 
78 f 
76 
80 
75 
August. 
100 
55 
894 
86 
51 
70J 
87 
71 
78| 
89 
49 
67 
109 
82 
60 
63 
80f 
724 
September. 
72 
64 
50 
62 
50 
Mean,. 
58| 
Note. —The observations were continued through October and a part of November, but being taken at the depth 
of one foot, and a change also being made as to the position of the air thermometer, they are omitted, as they do 
not correspond with those made in the preceding months. 
