382 BOTANICAL GAZETTE [MAY 
TABLE VIII 
No. Time . Hours Air per hour j|mg. COs, per hour Weather 
I | 6:00 P.M.- 9:00 P.M. 3 2.67 10.12 BD 
2 9:00 P.M.-I2:00 N. 3 2.00 Io.40 B 
3 | I2:00N. — 3:00AM. 3 2.00 41292 B 
4 | 3:00A.M— 6:00 A.M. 3 2:33 12.61 B 
5 6:00 A.M.— 9:00 A.M. a 2.00 359% Cc 
6 | 9:00 A.M.—I2:00 M. 3 2.00 14.96 C 
7 | 12:00M. — 3:00 P.M. 3 2.00 15.72 C 
8 | 3:00 P.M.— 6:00 P.M. 3 2.00 17.00 C 
9 | 6:00 P.M.— 9:00 P.M. 3 2.33 17.30 C 
IO | 9:00 P.M.—12:00 N. 3 2.33 17.60 C 
II | 12:00 N. — 3:00A.M, 3 2.33 18.42 B 
12 | 3:00A.M.— 6:00 A.M. 3 2.33 19.36 B-C 
13 | 6:00A.M.— 9:00 A.M. 3 2.33 19.68 C 
14 | 9:00 A.M.-12:00 M. 3 2.00 19.91 C 
15 | 12:00M. — 3:00 P.M, 4- 2.33 21.08 R 
16 | 3:00 P.M.— 6:00 P.M. 3 2.00 21.50 R 
17 | 6:00 P.M.- 9:00 P.M. 3 _ 2.00 21.Q1 R 
18 :00 P.M.-I2:00 N. 3 2.33 22.45 B 
19 | 12:00N. — 3:00 A.M. 3 2.00 23.83 A 
20 | 3:00A.M.— 6:00 A.M. 3 2.00 25.12 A 
ai 100 A.M.— 9:00 A.M, 3 2.33 25.52 B 
22 | 9:00 A.M.-12:00 M. 3 2.00 26.77 C 
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