32 



INJURY, EECOVERY, AND DEATH 



inlet tube and an outlet tube by means of wMeh the 

 solution may be changed. Each of the glass cells, B, C, 

 etc., has a similar inlet and outlet tube. Each outlet 

 tube has a rubber connection through which liquid can 

 be discharged udthout wetting the outside of the cells. 

 All of the inlet tubes are connected (by rubber tubing and 



Flo.' 8. — Disk of tiaaue, M, the edges surrounded by vaseline, VV, with an electrode carrier 



on each side. 



a system of Y-tubes) to the same funnel, so that all the 

 cells can be filled simultaneously. 



The edges of the glass cells are ground in a plane 

 exactly at right angles to the long axis of the cell. When 

 pieces of Laminaria are placed between them (as at F 

 and G) and they are pressed together, a tight joint is 

 formed. The series of glass cells (with pieces of mate- 



