152 



INDEX. 



Woolrich's Magneto-Electric Machine, 

 43. 



Works published upon Electro-Metal- 

 lurgy, 20. 



Yellow Prussiate of Potash used for 

 dissolving Cyanide of Silver, 104. 



Zincode, proposed term, 23. 

 Zincous and Chlorous, 24. 

 Zinc, best sort for Batteries, 25. 

 how to amalgamate plates of, 25. 



Zinc, how often the plates should be 

 amalgamated, 51. 



Sulphate, solution of, for Bat- 

 teries 51. 



recovery of Mercury from, 70. 



solution of, for Coating Iron, 98. 



deposit of, on Black Lead, 98. 



use of a coating of, 99. 



Zinced Iron, Dr. Faraday's opinion 

 of, 99. 



BELL AND BAIN, PRINTKKS, GLASGOW. 



