1918] 
DUGGAR AND BONNS—RATE OF TRANSPIRATION 171 
BLE 
(Series J.— Castor bean leaves) 
EFFECT OF BORDEAUX конг ОМ 2 RATE OF TRANSPIRATION. 
AT 
А IN GRA 
ік mS M 
1 |1046 A.M.-11:18 А.М. 9/24/17 | 2.6 5.0 | 8.7 | 9.1 | 0.3 | 8.4 | 5.1 | 8.8 
K:B = 16.7:31.3 = 1:1.87 Sunshine | ША d i | 
E 11:18 A.M.-11:48 А.М. 9/24/17 | 7.1 | 6.9 13.4] 8.0 | 1.0 | 12.2] 6.5 (11.8 
K:B = 28.0:38.9 = 1:1.35 - Sunshine | йж j i 
ы 11:48 А.М.—12:18 Р.М. 9/24/17 | 5117.7 ug ae 23 hon още 
K:B = 25.5:41.0 = 1:1.61 5 
" 12:18 P.M.-12:49 P.M. 9/24/17 |112 a 41 5. i sui in j 6.2 | 9.0 
K:B = 25.7:31.3 = 1:1.2 Sunsh 
ү 12:49 P.M.-1:45 Р.М. AUD | 6.4 i3 7.5 | 4 ни тави 
K:B = 30.7:63.4 = 1:2.07 . Sunshine 
| пай: зав" зк) e| e 8B' 
ы 3:21 Р.М.-3:55 Р.М. 9/24/17 | 1.2 E 3.2 | 4.2 | 0.7 | 12. 3| во 8.6 
K':B' = 13.1:31.3 = 1:2 = Sunsh 
eH 3:55 P.M.—4:29 P.M. ST | 1.3 e ese 14 pups 
K’:B’ =10.0:25.8 = 1:2.58 Sunsh 
Wi 4:29 Р.М.-5:04 Р.М. 9/24/17 | 0.3 in| xi 2.9 | - ad a 5.7 
K’:B’ = 6.6:19.5 = 1:2.9 Sunshi 
m 5:04 Р.М.-7:06 Р.М. NH | 1.6 Ы и il eaen ui 8.3 
K’:B’ = 11.2:33.2 = 1:2.96 
" 7:06 Р.М.-9:08 Р.М. 9/24/17 | ӨЛЕН tel га H = ЕДІ 5.1 
K':B'— 8.5 
" 9:08 P.M. x AS AI ME DEUS | 3.3 | 4.5 | 1.6] 5.4 | 2.2] 8.5 | 4.1 | 6.6 
K’:B’ = 11.2:25.0 = 1:2.23 | | | | fics i | 
7:03 A.M.-9:10 A.M. 9/25/17 | 1.6 E d 8.5 | 11 7.5 | 10. Ж 15.0 
XII 
К/:В/ = 18.4:42.4 = 1:2.34 eak sunshi 
9:10 A.M.-10:14 A.M. 9/25/17 | 2.9 | 11. 5 2а] 7.1 | ЧЕ ds] 18.4 
XIII 
K':B'— 18.5:58.1 = 1:3.1 ns 
— | 10:14 A.M.-11:09 А.М. ISAT | 3.6 73] 1244 E IEEE 
XIV за 
K':B' = 21.4:58.8 =1:2.75 Sunshine 
It had been intended to repeat the experiments with excised 
leaves under various environmental conditions, but the high 
temperature prevailing when the material was ready in the 
