90 



Tab. VI. 



LEAF-STALK— VL 

 The part under water .= 55 cm. 



Date. 



Time. 



Length 

 of Leaf- 

 stalk. 



Daily 

 Growth. 



Leaf. 



Daily 

 Growth. 



Mean 

 Temp. 



Remarks. 



■ Aug. 12 



12. m. 



0.0 





10.0 





26.5 



When the obser- 



13 

 14 



3. p.m. 

 2.45 „ 



17.0 

 33.5 



17.0 



16.5 



13.0 

 16.0 



3.0 

 3.0 



26.8 

 24.6 



vation began the 

 stalk was wholly 

 under the water, 



15 

 16 



3- „ 

 1.40 „ 



49.0 

 61.0 



16.0 

 12.0 



20.0 

 24.0 



4.0 

 4.0 



26.2 

 27.1 



only the upper 

 part of the leaf 

 appeared above the 



17 



12. m. 



70.5 



9.5 



28.0 



4.0 



28.6 



water. 



18 



55 



75.5 



5.0 



34.5 



6.5 



27.6 





19 



55 



77.8 



2.3 



37.5 



3.0 



27.9 





20 



55 



79.5 



1.7 



42.0 



4.0 



27.5 



Leaf almost un- 

 folded. 

 Fully unfolded. 



21 



5) 



81.3 



1.8 



43.0 



1.0 



27.3 



22 



55 



82.8 



1.7 



43.5 



0.5 



26.2 





23 



55 



84.3 



1.6 







25.1 





24 



55 



85.5 



1.2 







24.0 





25 



55 



86.5 



1.0 







25.6 





26 



55 



87.0 



0.5 







26.2 





Tab. VII. 



LEAF-STALK— VIL 

 The part under water = 50 c.m. 



Date. 



Time. 



Length 

 of Leaf- 

 stalk. 



Daily 

 Growth. 



Leaf. 



Daily 

 Growth. 



Mean 

 Temp. 



Remarks. 



Aug. 15 

 16 



3. p.m. 

 1.50 „ 



0.0 

 7.0 



7.0U 



2.5 

 11.5 



5.0 



26.2 

 27.1 



Upper 2.5 e.m. 

 were above the 

 water. 



17 



1.20 „ 



24.5 



17.5 



17.0 



5.5 



28.6 





18 



12. m. 



44.5 



20.0 



23.0 



6.0 



27.6 





19 



55 



57.5 



13.0 



29.0 



6.0 



27.9 



Leaf begins to 

 unfold. 

 Partly unfolded. 



20 



5) 



64.5 



7.0 



38.0 



O.O 



27.5 



21 



55 



67.5 



3.0 



43.5 



5.5 



27.3 



Almost unfolded. 



22 



55 



69.5 



2.0 



48.5 



5.0 



26.2 



Fully unfolded. 



28 



55 



70.3 



1.2 



49.5 



1.0 



25.1 





24 



5 



5 



71.+ 



0.7 + 



50.0 



0.5 



24.0 





25 



„ 



71.5 + 



0.5 







25.6 





26 



55 



72.+ 



0.5 







26 2 





1) The 

 perhaps 2-: 



PI. IV. 



number 7.0 

 cm. greater 



is the height above the water, the real daily growth in thie case being 

 and I have, th -re fore, used 9.0 instead of 7-0 in drawing the curve of 



