Manchester Memoirs, Vol. liv. (1910), No. 13. 3 



nearly filled with y\y normal common salt solution. 

 Within each was placed a large porous pot, 8 inches deep 

 and 2i inches wide, containing ^^^ normal zinc sulphate 



mm^mmmm 

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solution. An amalgamated zinc rod placed in each pot 

 served as an electrode. The person under test, having 

 protected any abrasions or cuts in the skin by vaseline, 

 places a hand in the salt solution in each vessel, immersing 



