Transpiration as a Factor in Crop Production. 59 
Height 
of stalk 
Inches 
(13) 
Ratio of 
wt. of ear 
to wt. of 
stalk 

oj 
Leaf-area 
per gram 
dry 
matter 
Transp ration per 
sq. in. 
leaf- 
area 
Grams 
(10) 
gram 
total dry 
matter 
Grams 
(9) 
gram 
dry wt. 
, of ear 
COO 
Total 
leaf- 
area 
CO 
Total 
water 
transpired 
Kilograms 
(6) 
Dry matter 
Total 
Grams 
(5) 
Leaves 
Grams 
(4) 
Ear 
Grams 
(3) 
Grams 
(2) 
Potometer 
No. 
(I) 
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