ON DROSERA ROTUNDIFOLIA 1 
approximately the same as before, 22 hours and 45 minutes. 
At the end of the reaction the tentacle measured 3.74 mm. _ It had 
increased 0.37 mm. in length. A control, that like this tentacle 
TABLE IV 
oof | =| Sa | Se 8H] Se | Te] Se | we] os | p=] 8= | gx 
9 * ees 3 ° we ~ a * ° 
Segment | Hq | Aq | ad | Mt] pe | te | ae | Se Py | Oe 
ms I 80; 80] 80)| 80 0} 80! 8 Oo} 80 80} 80 
a] 2 6 c26 25) 8541351. 25 |. 25) 251.85) 25) 251-25 
= < 28| 28| 28] 28| 28| 28| 28| 28] 28| 28] 28| 28 
s 4 341-351 -35.| 35135 | 30) 30) 268 36),°36) 96° 26 
g 5 46! 46 |.°49.) S31 54) 551° 551° S74 S71 S71 54) 53 
, 6 55| 64| 64| 69| 69} 69} 69} 71] 71} 71} 71) 70 
Adaxial side 
TAM RW N 
Ww 
- 
Ww 
wn 
Ww 
wm 
ws 
on 
Ww 
un 
WwW 
uw 
w 
wn 
WwW 
uv 
Ww 
uw 
WwW 
uw 
Ww 
ww 
w 
ron 
Total | 339 | 344 | 345 | 345 | 346 | 347 | 348 | 349 | 350 | 355 | 364 375 
* Controls well bent. 
had made one previous inflexion, measured 2.85 mm. before and 
after the experiment. Another that had never reacted measured 
similarly 2.3 mm. 
This tentacle was allowed to rest over another day and it was 
stimulated for the third time. At this time it measured 3.74 mm. 
ne eee eS 
2 eS 
Fic. 9. A graph representing the second reaction of the tentacle shown in 
Fics. 1-4; drawn according to data in TaBLeE IV, and on the same scale as Fic. 4. 
