TEMPERATURE AND AUTONOMOUS RESPONSES 343 



The process of relaxation in the motile organ may be the 

 result of entirely different causes. It may be a consequence 

 of a loss of tone, such as results from narcotisation ; or it 

 may be brought about by excessive turgor, caused by increased 

 internal energy. 



The apparently simple rhythmic pulsations of Desmodium 

 can be analysed and shown to consist of subsidiary minor 

 pulsations. The ordinary pulsations, again, may show hourly 

 and daily periodicities. 



