Exp. 108, To study the effect of dilute sulphuric acid
upon carbon and various metals.--To amalgamate.--Dilute
sulphuric acid.--Discussion.--Exp. 109, To study the effect
of dilute sulphuric acid upon various combinations of
metals.--Discussion.--Exp. 110, To study the construction of a
simple Voltaic or Galvanic cell.--The Electric Current.--Source
of the Electrification.--The Electric Circuit; Open and Closed
Circuits.--Plates or Elements.--Direction of Current.--Poles or
Electrodes.--Chemical Action in the Simple Galvanic Cell.--Action
in Cell Using Impure Zinc; Action Using Pure Zinc.--Exp. 111, To
see what is meant by "local currents" in the cell.--Local Action;
Local Currents.--Reasons for Amalgamating Zinc Plates.--Exp.
112, To study the "single-fluid" Galvanic Cell.--The Simple
Cell.--Polarization of Cells.--Effects of Polarization.--Remedies
for Polarization; Depolarizers.--Exp. 113, To study the
"two-fluid" Galvanic Cell.--Setting Up the Two-Fluid Cell.--Care
of Two-Fluid Cell.--Copper Sulphate Solution.--Chemical Action
in the Two-Fluid Cell.--Various Galvanic Cells; Open and Closed
Circuit Cells.--The Leclanché Cell--Dry Cells.--The Bichromate of
Potash Cell.--The Daniell Cell.--The Gravity Cell.