426 



GENERAL PHYSIOLOGY 



substances, but in plants that, like Mimosa, move by changes 

 of turgescence. If single induction-shocks be allowed to act upon 



FIG. 207. Myographic curves from the gastrocnemius of the frog. 7, Single contractions pro- 

 duced by single opening induction-shocks. II, Incomplete tetanus, produced by opening in 

 duction-shocks following in rapid succession. 777, Complete tetanus, produced by induction- 

 shocks in very rapid succession. 



a Mimosa the branches and leaves of which are outspread, they 

 have exactly the same effect as mechanical stimulation : the 



