AUTONOMIC MOVEMENTS IN SUCCULENTS 



337 



TABLE 8 



Experiment 10. Correlation of movements of Opuntia and water-content of tissues 



T = total transpiration for the period indicated. A = total transpiration for 

 the period indicated. E = water loss per hour from standard atmometer. 



MAXIMUM 



ERROR FOR 

 A 



WATER-CO NT i: NT 



Gain 



Loss 



Plant No. 



June 20, 



June 21, 



June 21, 

 June 21, 

 June 21, 



June 22, 



June 22, 



June 22, 



June 23, 



June 23, 



June 23, 



8 p.m. 



8 a.m. 



12 m.. 

 4 p.m. 



9 p.m. 



8 a.m. 

 12 m.., 

 7 p.m. 

 7 a.m. 

 12 m.. 

 4 p.m. 



grams grams 



3.6 



1.2 

 0.9 

 0.8 



5.5 



0.9 



1.2 



1.5 

 0.8 



3.3 



2.0 

 0.5 

 1.0 



3.1 



1.8 



2.3 



1.5 

 0.9 



grams 



0.0 



0.8 

 0.0 

 0.2 



0.0 



0.9 



1.1 



0.0 

 0.1 



grams 



0.3 



0.0 

 0.4 

 0.0 



2.4 



0.0 



0.0 



0.0 



0.0 



Plant No. SI 



June 20, 8 p.m. 

 June 21, 8 a.m. 



June 21, 12 m. . 



June 21, 4 p.m. 

 June 21, 7 p.m. 



5.1 



0.5 



0.7 

 0.4 



3.2 



2.4 



2.7 

 0.0 



/+0.3 

 1-1.1 

 f+0.7 



I — 1-1 



±0.4 



±0.02 



0.0 



1.9 



2.0 

 0.0 



1.9 



0.0 



0.0 

 0.4 



Plant No. 



June 23, 8 p.m. 

 June 24, 8 a.m. 



June 24, 12 m. . . 

 June 24, 4 p.m.. 

 June 24, 7 p.m.. 

 June 24, 11 p.m. 



3.4 



5.3 

 3.4 

 5.4 

 0.5 



8.0 



3.8 

 1.8 

 4A 

 0.5 



+0.2 

 -0.4 

 +0.8 

 -0.2 

 ±0.2 

 +0.8 

 -0.2 

 ±0.06 



4.6 



0.0 

 0.0 

 0.0 

 0.0 



0.0 



1.5 

 1.6 

 1.0 

 0.0 



THE PLANT WORLD, VOL. IS, NO. 12, 19l5 



