STIMULATION OF MUSCLE AND NERVE 



95 



cle current to the electrometer and for stimulation. 

 After use, the boots should be emptied, rinsed in 

 tap water, drained, and placed in several, hundred 

 cubic centimetres of normal saline solution until 

 wanted again. If the foot of the boot is kept saturated 

 with normal saline solution these electrodes will remain 



Fig. 24. The moist chamber ; about three-fifths the actual size. 



non-polarizable. They may also be used with normal 

 saline clay. 



The Moist Chamber. 1 The moist chamber (Fig. 

 24) consists of a porcelain plate which bears near 



1 Science, 1901, n. s. xiv, p. 569. 



