II4 BOTANICAL GAZETTE [aucust 
Experiment 23.—Plants with roots grown in water culture wer 
placed in water so that the stems were submerged. From several the 
cuticle and outer part of the cortex was peeled off, so that water 
would enter freely, and in some the foliage was enclosed in a moist 
chamber. No roots developed. 
Experiment 24.—Stems with roots intact were submerged as in 
he the last experiment, but some of the stems 
: were slit through the middle longitudi- 
nally, while from others a slice out of the 
side the length of the internode and one: 
third the diameter was taken. Thus free 
Fic. 6 Fic. 7 ae 
absorption of water was possible all along the stem, but no 1° 
developed. If, as will be discussed again, the cut be a transvers® 
— severing some of the bundles, roots promptly develop just i 
this; or if the roots be removed new roots form along the stem. 
Experiment 25.—Stems with roots intact below were surrounded 
at local regions by water in glass cylinders (fig. 6), and the base 
was removed so as to allow free absorption. No roots develoP® 
If, however, as in fig. 7, stems were used from which the ool 
