1897 | THE CURVATURE OF ROOTS 335 
TABLE II. 
Tangential longitudinal section of root geotropically excited for three 
hours and curved through 60°. The section lay entirely within the newly 
formed cortex. 
MEASUREMENTS OF LENGTH OF CELLS OF CONVEX SIDE. 
Basal A 
Api verage 
LO) es a. a: ae 2 am 46 55 35-54 
(2) 
30 40 50 45 55 58 60 te ae 48.3 
(3) 30 so... 62 60 40 37 35 _ re 45. 
Gy. 3 3 3° 6 ao 9 40 40 38.5 
i i ae: Se 2 ie ee ae 44.87 
a es ae: ee Se 30 «40 26.75 
ts Se 45 40 23 30 50 65 30 i 39.12 
38 30 34 36 38 40 40 35-77 
ia) 2 16 . = a: eee Seb ay 22 
| U4) 03. 35 ao fe 3° cre oe 16.37 
(ts). 318 30 28 22 HUM 3234 es 29. 
a MEDIAN. 
i Apical Basal Average 
, 20 25 24 32 28 30 ‘a 26.2 
MEASUREMENTS OF LENGTH OF CELLS OF CONCAVE SIDE. 
Apical Basal A 
= (15) 25 25 30 30 35 36 ae Oe -+ 31.37 
oF (14) 25 2! 26 20 30 26 36 35 a ee 
Seabathei nas aia call aes 
oe) ae 5. eee ae ae ae ee 29.87 
my oe 56 ey ee cee 24.11 
40 30 20 Be 30 20 Cs Ms © 2 Fr. 
ee ae ee eee. Be go ae ee 24.77 
Ey 15 16 40 40 25 20 22 40 28.11 
es ee ae ee a 22 eS 27.33 
28 25 18 18 20 20 35 25. 3e. 23-33 
: 3e 35 20 18 20 22 21 22 a 20.75 
Me oe a ae es ee ee 
—— 20 20 26 26 28 40. 36 * 27. 
Average length of cells of convex ade a 
sa : Average length of cells of concave dt, tt 29.18 
