Gossypium herbaceum. 
Litoyp: LEAF WATER IN GossyPIUM 
TABLE I 
centage of dry weight. 
Auburn, Ala., Sept. 16-17, r1910. 
Leaf water in per- 
Hour Series I Series IT | Average 
16 274 280 279 
18 266 284 275 
20 203 306 299 
22 287 263 275 
24 282 275 278 
2 205 279 287 : 
4 285 291 288 
6 279 203 286 
8 202 318 303 
to 293 305 209. - 
I2 244 244 244 
14 220 246 233 
TABLE II 
Observed leaf water expressed in percentage of dry weight and the percentages 
obtained by assumin 
g ao per cent. increase 
and 17 per cent. and 30 per cent. for the second four hours. 
in dry weight for the first four hours 
Observed Calculated 
Hour Dry wt | Water | Per cent. water Dry wt Water | Per cent. 
6 4.15 11.79 284 
Io 3-70 II.07 299 4.52* II.79 265 .* 
14 5.53 12.87 233 4.86T 11.79 243 
5-53 12.87 233 5.40t PE70 lo ATO. 
TABLE III 
Gossypium herbaceum. Series 1, Tucson, Ariz., Aug. 24, torr. 
Amount of 
leaf water in percentage of dry weight and the same calculated to 100 sq. cm., the 
average dry weights in TABLE V, being assumed as applicable to the material on 
which this table is based. 
Observed weights 
Hour 
Dry Water 
6.20 10.55 34.36 
10.00 10.84 28.02 
13.30 12.12 28.78 
Weight per 100 sq. cm 
Area SCRE 
Dry (assumed) Water 
ee) 
2153 0.49 1.59 
1918 0.565 1.465 
1933 0.62 1.493 
* 4.15 plus 9 per cent. 
T 4.15 plus 17 per cent. 
t 4.15 plus 30 per cent. 
