CORRECTIO?;
RY TVI1,IIEK D. H A I S C R O F T
Xii unfortunate error has occurred in Nr. Cady's paper 011 the Electromotive Force betn-een Almalgams.l It is there pointed out that the work done in carrying one reacting weight of dissol\-ed zinc froin one concentration to another is the saiiie vliether the zinc has the formula Z1il, Zno or 211,. IYhile this is true, the quantity of electricity' necessary to transport one reacting weight of 211,is double that necessarj- to transport one reacting weight of ZnI. T h e electromotive force of the cell in the case of Ziiz existing in the amalgaiii n.oulc1 be one-half tliat of a cell in which Ziiz existed in the ainalgain." T h e electromotive force does slion- the degree of coinplesity in the amalgam provided the lieat of dilution is zero. T h e responsibilitj- for the inistake is mine. T h e error does not affect tlie important part of Nr. (lady's paper. Jour. Pli~-s,Cliern. 2 , 554 [ rS9S 1 . Le Blanc. Electroclieniistry. I j g
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