LIST OF ILLUSTRATIONS. 



PAM 



1. Darnell Cell - 60 



2. Balloon Cell 61 



3. Callaud Cell 62 



4. Meidiuger Cell .. .. .. .. .. .. 63 



5. Bunsen Cell .. .. 64 



6. Leclanche" Cell 07 



7. De Lalande aud Chaperon Oxide of Copper Cell . . . . 68 



8. NOB'S Thermo-electric Battery .. .. .. .. .. 70 



9. Clamond Thermo-electric Battery .. .. .. .. 71 



10. Gramme Bobbin, ordinary size .. .. .. .. .. 74 



11. Gramme Bobbin, large size .. .. .. .. .. 75 



12. Gramme Machine for Electro-deposition .. .. .. 75 



13. Cut-out 76 



14. Siemens Machine .. .. .. .. .. .. 78 



15. Schuckert Machine .. .. .. .. .. .. 79 



16. Mather Machine 81 



17. Weston Machine 82 



18. Elmore Machine .. .. .. .. .. .. ..84 



19. M. Pe'rille's Nickeling Works 114 



20. Arrangement of Anodes and Ca i hodes .. .. .. ..123 



21. Nickeling of Small Objects 126 



22. Vat for Nickeling 132 



23. Polishing Lathe 135 



2-i. Messrs. Neumann, Schwartz, and Weil'a Works .. 13(i 



