INDEX. 



147 



Decomposition effected by the Pile, 



Battery, 2 



of cyanide solutions, 113. 



De la Rive and Spencer's failure in 



Gilding, cause of, 92. 

 De la Rue, Mr., 4, 71. 

 Deposition of one metal upon anoth- 

 er, 2. 



of Alloys, 137. 



of Bronze, 138. 



Deposited metal, quantity of, depend 



ing on thickness of plaster, 11. 

 Deposit, how to prevent adhesion of, 

 48. 



how to make a non-metallic 



mould, 60. 



non-adherence of, 98. 



dissolving off in solutions. 116. 



Depositing by separate battery, 65. 



Silver, 123. 



Lead, Iron, and Tin, 136. 



Depositions in large moulds or ob- 

 jects, 62. 

 Dirck's Mr., notices of Jordan's 



claims, 8. 



Dipping articles in acid for plating, 

 109. 



in Nitrate of Mercury, 109. 



partially coated articles, 112. 



Different Densities of solutions, 77, 

 114. 



effects of, 77. 



metals used for plating, 122. 



Dead Silvering upon Medals, 125. " 

 Distance between Battery Plates, 27. 



experiments upon, 27. 



Distillation of Mercury from Zinc, 71. 

 Dissolving Silver from Copper, 113. 



off deposited metal in solution, 



116. 



Copper Moulds from Silver, 123. 



Drawing for Glyphographs, 80. 

 Drying Articles from Solution, 109. 



Early Deposition of Metals, 2. 

 Earth Battery, properties of, 43. 

 Effects of Resistance in Batteries, 72. 

 Effects of Light upon Silver Solu- 

 tions, 107, 108. 



different Densities of Solu- 

 tions, 77. 



Size of Electrodes, 110. 



Decomposition of Cyanide Solu- 

 tions, 113. 



Engravings, copying of, 83. 

 Electro-decompositions, early opin- 

 ions concerning, 3. 



Gilding, opinion of, in 1805. 



deposition by early experimen- 

 ters, how affecting the dis- 

 covery of Electro-metallur- 

 gy 3. 



Electro-Metallurgy, its discovery, 4. 



description of, first published, 6. 



its discovery, Smee's opinion 



of, 4. 



Name first applied, 20. 



Works published upon, 20. 



Electro-plating, 103. 

 Solutions for, 103. 



Advantages of, 121. 



Objections to, 122. 



Electro-Gilding, 127. 



Objections to, 131. 



Electrotype, Spencer's first paper 

 upon, 7. 



processes, 47. 



lectrotypes from Daguerreotypes, 64. 

 Electrotyping, forms of apparatus 

 for, 49. 

 lectrodes, definition of, 24. 



size of, 66. 



relative size and effects, 110. 



unequal action upon, 130. 



Crystals of Sulphate of Copper 



upon, 77. 



Electrolyte, 24. 



Electrolysis, Faraday's theory of, 139. 



Graham's theory of, 140. 



Daniell's theory of 141. 



proposed theory of, 142. 



Electricity viewed as an Acid (electric 

 acid), 3. 



from sandy deposits, 120. 



Elements, different, of Batteries, 28. 



of Electrolytes, non-transfer of, 



75. 



Elastic Moulding, 58. 



to take figures by, 64. 



Eisner upon Galvanic Soldering, 84.. 



Endosmosis of Solution, 142. 



Economy of Amalgamating Zincs, 26. 



Experiments upon Distance of Bat- 

 tery Plates, 27. 



Exciting Solutions for Batteries, com- 

 parative value of, 50. 



Experiments on Galvanic Soldering, 

 84. 



