In the next place, to know the influence of the interchange of day 

 and night upon growth, and also the different rates of growth in fore-noon 

 and after-noon, measurements were made thrice a day, that is at 6 a.m., 

 6 p.m., and noon. The objects used for observations were leaf-stalks, VI, 

 and VII, and flower-stalk, II. 



LEAF-STALK-VI. 



Tab. XII. 



Date. 



Time. 



Length. 



Growth 

 Day and 



Night. 



Mean 



Temp. 



Day and 



Night. 



Growth 

 Fore-noon 



and 

 After-noon. 



Mean 

 Temp. Fore- 

 noon and 

 After-noon. 



Aug. 

 15 



3 p. 



49.0 











16 



6 p. 

 6 a. 



50.0 

 55.0 



[ Night 5.5 



24.6 







17 



12 m. 

 6 p. 

 6 a. 



61.0 

 63.5 

 67.5 



[ Day 8.0 



1 Night 4.0 



28.7 

 25.9 



ra.m. 5.5 

 [p.m. 2.5 



26.5 

 30.6 



18 



12 m. 

 6 p. 

 6 a. 



70.5 

 72.5 

 74.0 



[ Day 5.0 



| Night 1.5 



30.5 

 26.9 



[a.m. 3.0 

 [p.m. 2.0 



29.4 

 31.7 



19 



12 m. 

 6 p. 

 6 a. 



75.5 

 76.5 



77.0 



[ Day 2.5 



1 Night 0.5 



28.9 

 25.6 



ja.m. 1.5 

 jp.m. 1.0 



27.3 

 30.4 



20 



12 m. 

 6 p. 

 6 a. 



77.8 

 78.2 

 78.6 



( Day 1.2 



1 Night 0.4 



30.0 

 26.2 



[a.m. 0.8 

 [p.m. 4 



29.1 

 30.8 



21 



12 m. 

 6 p. 

 6 a. 



79.5 

 80.0 

 80.5 



( Day 1.4 



| Night 0.5 



29.5 

 25.2 



[a.m. 0.9 

 rp.m. 0.5 



28.8 

 30.1 



22 



12 m. 

 6 p. 

 6 a. 



81.3 

 81.7 

 82.3 



[ Day 1.2 

 1 Night 0.6 



28.2 

 24.7 



[a.m- 0.8 

 [•p.m. 0.4 



27.3 



29.2 



22 



12 m. 

 6 p. 

 6 a. 



83.2 

 83.5 

 84.0 



[ Day 1.2 



I Night 0.5 



28.9 

 22.4 



1a.m. 0.9 

 [p.m. 0.3 



27.9 

 30.3 



