1897 | THE CURVATURE OF ROOTS 345 * 
would be decreased. This latter effect is absent from an arrange- 
ment of the branches on the convex side, and the fixative power 
of the system is increased. 
TABLE YX. 
Median longitudinal section of root of Zea mais bent mechanically through 
MEASUREMENTS OF LENGTH OF CELLS OF CONVEX SIDE. 
| Apical Basal Average 
ey (Ep) 5: 326 fo we ee BR ge Gas 
! > @ «6a 8 ee 0 36 Sin --o6 
: ) =o - 75 45 tad 490 65. BG ons 
i G) 48 too - 65 75. 7a. ge Be. 7% 
fs} Se gi “itce Se “G6 Sc Sy  “7e% 
(6) 60 75 4g Ge he ge > RE 
(7) 45 55 80 60 70 60 go 65.5 
(8) 65 35 60 70 60 70 50 61.4 
Average length of cells, - - - - 73.56 
MEASUREMENTS OF LENGTH OF CELLS OF CONCAVE SIDE. 
Apical Basal Average 
(Rey 5s. 45 af ee tot go, aS 
6 
ee na oe a ee 
Sg: 50 75 50 65 70 64.2 
os ee Se. Sam OS ee 
50 50 50 
Average length of cells, - - ~ 56.85 
MEASUREMENTS OF WIDTH OF CELLS OF CONVEX SIDE. 
A Basal Average 
US) ey Gee Soe : Be ee Oe 
RO ee ee 
oe oe Re eee a eee ee 
Oe eB ee ee 
eye BR a 
(6)'-- G 7 6 6 7 8 6 >... Gaz 
eG ee ae ee Oe a ee 
a 5 é 7 9 7 7 oie nae 6.83 
Average width of cells, - - - - 6.98 
