54 STUDIES IN THE VEGETATION OF THE STATE 



the plants had never fully recovered from the first drought, 

 for they were unable to withdraw as much water from the 

 soil as similar plants which had been allowed to die without 

 reviving them. The increase of the limit ranged from 2 to 

 7 per cent, varying possibly with the amount of injury done 

 to the finer roots and root-hairs of the plants. The results 

 indicate that in such instances the root -hairs are probably 

 destroyed 



The following tables of data show the effects of wilting 

 on some of the plants in Comparative Plot III. Under the 

 heading "Wilting Plant" is given first the amount of water 

 in the plant at the time it wilted badly from drought, second 

 the per cent of water in the soil at the same time, and under 

 the heading "Dying Plant," first the amount of water in 

 the dying plant, second that in the soil at the same time, 

 taken when the plant was dying after having been partially 

 revived from the first excessive wilting. In the last in- 

 stance the plants were revived by adding water to the soil,, 

 care being taken not to wet the leaves of the plant. 



