Curtis: Turgidity in Mycelia 



7 



ated and grown in a 4$ KNO s nourishing solution on the day of 

 the experiment, while in the fourth column 18 — records the fact 

 that this same strength of the plasmolyzing solution did not plas- 

 molyze as strongly the plant that was subjected to the change of 

 concentration. 



I. 



3 



4 



5 



21. 

 21 5 



0-4 



21.5 



22.6 

 22.6 

 22.6 



21.5 

 20.8 



4 i 



a 



i i 



a 



. 1 



«i 



<( 



a 



4( 



2-3 

 2- 15 



1-43 



i-35 



i-45 



•59 



1.25 

 1.50 



•45 



17 n. p 

 18 

 18 

 18 



18 + 



20 4- 



20 4- 



20 

 18 

 18 



18 



18 

 18 

 18 

 18 

 20 

 20 



20 

 18 



18 



These are a few illustrations taken from many experiments to 



give an idea of the 



range of variation in different cases 



The 



interesting feature appears in columns 4 and 5. All the measure- 

 ments show practically the same result, that before growth is re- 

 newed the turgor force has become equal to the turgor of plants 

 growing normally in this solution. Scores of experiments were 

 performed testing the plants as in the first experiment with a lowei 



II. 



22.6 

 22.6 



21. s 



21.5 



25- 



25- 



23. 



22 5 

 21. 



4-0 



3 



15 min 

 40 



34 

 20 



5o 



35 



30 



47 

 28 



4 



8 

 8 

 8 

 8 

 8 



7n. p 



8 



8 



8 



5 



8 

 8 

 8 

 8 

 8 

 8 

 8 

 8 

 8 

 8 



percentage than the check plant indicated. The result was either 



as in this case a lack of plasmolysis or only slight indications of it. 



The three measurements indicating a turgor force of 20 are 



introduced to illustrate the variations that appear without any 



