1913] REED & COOLEY—TRANSPIRATION 427 
TABLE I 
TRANSPIRATION OF DISEASED AND HEALTHY YORK LEAVES 
Transpiration | Transpiration cen 
Hour at which of healthy of diseased of water 
No. Date oe leaves in gm. leaves in gm nspi 
egan per hr. per r hr. pe dise: 
sq. cm. sq. cm. leaves 
I9gt2 
iar Gy Cee July 9 3:27 P.M 0.00627 0.0064 103.6 
phere. Marana 9 4:15 P.M 0.00257 0.00203 78.6 
ecere lire asa bie) Q:10 AM 0.0022 0.0033 150.0 
PE eee prone Bie) 10:20 A.M 0.0074 °. 93-2 
GS Ai are wee 10 2:20 P.M 0.0039 0.0043 110.3 
Ona it 10 3:50 P.M ©,0041 0.0040 97-5 
sere Cee 12 9:30 A.M 0.0057 0.0005 II4.0 
Las ee 12 10:45 A.M 0.0134 0.0071 52.9 
co ed nner ara 12 2245 P.M 0.0046 0.0048 104.3 
ROE ea coed 12 4:05 P.M 0.0079 0.0040 50.6 
LT ee ay ee 13 9:03 AM 0.0083 0.0106 127.7 
Tae ea es 13 10:14 AM 0.0036 0.0023 63.9 
1 Ug aoe gy 13 1:38 P.M 0.00403 ©,.0043 106.7 
DG cans fe 15 9:06 A.M 0.00508 0.0082 161.4 
TS ee 15 10:07 A.M 0.0079 0.01033 130.7 
TOS es 16 10:20 AM 0.0257 0.0095 36.9 
<i Gee ee ce £7 1:45 P.M ©, 0102 0.0078 76.4 
Boe rere ct aa 17 3:00 P.M 0.008 0.0022 31.4 
ORE Sec gree 17 8:17 AM 0.0102 0.0057 56.0 
BF oe 17 9:40 A.M 0.143 0.0096 67.1 
5 Baer aie en 22 8:50 A.M 0.0063 0.0028 44.4 
Pea irene 22 9:50 A.M 0.006 ©..00505 84.2 
23.. 22 1:50 P.M 0.0101 0.00718 hee 
2) Waren pane 22 2:57 P.M 0.0116 0.0088 YA 
4 Pee a ss aS 23 8:38 A.M ©.00505 0.0020 57-4 
Senne oe 23 9:55 AM 0.00863 0.00573 66.4 
yer ee aren 23 2:45 P.M ©.0104 oO. 77-7 
de eee 23 1:53 P.M 0.0171 0.00589 34-4 
0. ey 25 2:35 P.M 000617 0.00465 75-3 
BO. wean 25 1:40 P.M 0.0058 ©,00425 73-3 
Beak a ee 26 9:30 AM 0.00908 0.0066 9t.3 
cei ened 26 8:30 A.M 0,0056 0.00439 78.4 
a 26 1:35 P.M 0.00737 0.006638 go. 
esi gs Cea? 26 2:25 P.M 0.00743 0.00408 54-9 
cee are 27 9:25 AM 0.0105 0.0072 68.6 
2605 27 2:10 P.M 0.0079 0.0 76.7 
i Aug. 15 3:10 P.M 0.0057 0.00335 58.8 
Pia 15 4:30 P.M 0.00445 0.0011 24.8 
5 ey eee al 16 10:33 A.M 0.00562 0.00375 66.7 
AB aaa 16 2:45 P.M 0.0055 0.0051 92.9 
AY fe ee 16 4:17 P.M 0.0148 0.0107 712.3 
re Perea as 17 9:40 AM 0.0047 0.00351 74.8 
435 055 Goce 19 8:45 AM 0.00508 0.0025 49.2 
AAS sees 19 3:20 P.M 0.0055 0.0060 10g.T 
PU eae 19 4:33 P-M 0.0104 0.00706 67.9 
PY 20 10:54 A.M 0. 5003 0.0034 64.1 
S70. 20 18 P 0.002918 | 9.002908 99.6 
ee 20 3:35 P.M 0.0036 0.00248 68.3 
