REFERENCES
- M. Berry, British Pat., 1838/7630.
- W. Roberts-Austin, Phil Trans., 1896, 187A, 383.
- British Patent, 1900/5647.
- W. Johnson & S. Woolrich. Trans. Am. Electrochem. Soc. 1912/2181.
- N.L. Vauquelin, Ann.Ozim., 1798, 25, 21.
- S. Cowper-Coles, Engineering 1924, 118, 277.
- O.W. Storey, Met. Chem.Eng., 1916, 14, 683.
- Mrs. P. Cowper-Coles, discussions with author, 1972.