THE RHEOTROPISM OF ROOTS 
: ‘With 2; mays (popcorn) three experiments were sine ‘' a 
= eleven roots were used. The tips were never allowed 
ssitively with angles 
lle 5 to 20°; the 
h angles of 15 
othe. other five 
eg - The third experiment was quite like the ot 
: that the roo " ore 
our were neutral. One of the responding roots 
|) Otte of 15°, and four of 20°) - 
Ray | Sativus (Early Long Scarlet), rest 
In the first group thirteen seedlings ' . 
a ater the revolution — five roots we 
