24 
Research Bulletin A o. 3 
Table 2. — Evaporation from a free water surface in the green- 
house and in the adjacent open air. 
In greenhouse 
In open air 
March . . 
April 
May 
June 
July 
August. . 
September. 
1909 
1910 
1911 
1909 
1910 
Indies 
Inches 
Inches 
Inches 
Inches 
4.7f 
5.7 
5M 
4.7 
6.7 
4.0* 
4.7 
8.2 
5.9 
5.6 
4.0 
3.9t 
13.7 
6.7 
7.8 
4.2 
13.0 
6.0 
7.4 
8.0 

6.0 
.... 
* From the 3d. f From the 12th. \ To the 21st. \ From the 12th. 
Table 3. — Relative humidity at 5 />. m. in the greenhouse and in 
the open air. 
1910 
April Second decade 
Third decade. 
May First decade 
Second decade 
Third decade. . 
June First decade . 
Second decade 
1911 
March . . . 
In greenhouse In open air Difference 
First decade 
Second decade 
Third decade 
April | First decade 
Second decade 
Third decade 
May First decade 
Second decade 
Third decade 
June First decade 
Second decade 
Third decade 
July First decade 
Second decade 
Third decade 
August. . . . First decade 
Second decade 
Third decade. 
September First decade 
Second decade 
Third decade 
Highest humidity recorded on any day 
Lowest humidity recorded on any day 
48 
49 
1 
33 
29 
4 
55 
58 
3 
54 
52 
2 
49 
47 
2 
51 
51 
0 
43 
33 
10 
43 
55 
12 
39 
33 
6 
39 
* 
41 
* 
42 
40 
2 
50 
48 
2 
48 
49 
49 
43 
6 
59 
54 
5 
40 
36 
4 
41 
38 
3 
38 
32 
6 
37 
33 
4 
45 
39 
6 
40 
37 
3 
42 
44 
2 
49 
47 
2 
46 
* 
57 
64 
7 
56 
58 
2 
57 
65 
8 
85 
88 
22 
15 
Record incomplete. 
