DEPARTMENT OF BOTANICAL RESEARCH. 



Swelling of agar. 



69 



Agar 90, oat protein 10. 



Temp. 



20-22 hrs. 

 (final). 



°C. 



15-16 



22-23 



30-31 



38-39 



46-47 



48-49 



0.18 mm. 

 0.18 mm. 

 0.16 mm. 

 0.18 mm. 

 0.18 mm. 

 0.16 mm. 



p. ct. 

 1794 

 1900 

 3078 



2917 (12 hrs.) 

 2889 (10 hrs.) 

 Complete. 



Agar 90, bean protein 10, nutrient salts 0.85. 



Temp. 



20-22 hrs. 

 (final). 



°C. 



15-16 



21-23 



30-31 



39 



46-47 



48-49 



0.20 mm. 

 0.20 mm. 

 0.18 mm. 

 0.18 mm. 

 0.18 mm. 

 0.18 mm. 



p. ct. 

 1325 

 1900 

 2022 



2791 (12 hrs.) 

 2361 (10 hrs.) 

 Complete. 



above 40° C, as both speed and total capacity become uncertain at 

 46° C. and above. All of these critical points lie within the range of 

 activities of plants. 



Perhaps the most striking example of diverse and contradictory 

 effects of a single agency is that of rising temperature on the swelling 



