SPONTANEOUS MOVEMENTS IN LA R V.I-:. 423 



The arrow marked A. R. R. indicates the number of seconds required for 10 

 respiratory movements when returned to normal sea water from the acidulated 

 water. 



Chart XIV. shows the influence of high concentrations of COt on the respiratory 

 rate in two individuals (A and B). 



Chart XV. shows the fall of the respiratory rate which is observed at the end 

 of each spontaneous movement. 



On Tables I. and II. the average number of movements (that is. the number of 

 separate movements which took place regardless of extent and character) is given 

 for each lo-minute period under different conditions. 



In Tables III. and IV. is given the average numerical value (that is, the amount 

 of movement, using the coil to one side for unity) for each to-minuce period under 

 different conditions. 



