INDEX. 



151 



Smee's Claims to the original discovery 

 of the laws of Electro-De 

 position, 19. 

 ... Battery, how constructed, 40. 



Battery, modifications of, 41. 



properties of, 42. 



Advice to Capitalists, 69. 



Size of Electrodes, 66. 

 Sources of Defects in Batteries, 35. 

 Solutions for Battery, how often 

 changed, 51. 



different density of, 77. 



Silver, best method of mak- 

 ing, 105. 



for Amateurs, 106. 



for deposition of Alloys, 137. 



of Gold, preparation of, 128. 



by Acid, 127. 



by Battery, 128. 



best sort, for depositing solid 



silver, 123. 

 Solid Silver articles made by Battery, 



123. 

 Soda, Hyposulphite, preparation of, 



106. 



Soldering by Deposition, 84. 

 Spencer, his first Experiments, 4. 

 his first paper upon Electro- 

 typing, 7. 



effects of it when first publish- 

 ed, 8. 



Jacobi's and Jordan's claims, 8. 



manipulations for Electrotypes, 9. 



first Electrotype, 14. 



Stereotyping in Copper by Electro- 

 type, 16. 



Sustaining Battery, 36. 

 Sulphate of Copper, impurities, 47. 



action upon Iron, 139. 



Zinc for Batteries, 51. 



solution for Coating, 98. 



Sulphate of Copper and Cyanide of 



Potassium, mixed, 93. 

 Sulphuric Acid for Batteries, 51. 

 Sulphite of Silver Solution, 107. 



Potash, preparation of, 107. 



Sulphurous Acid, how prepared, 107. 

 Suspending Electrotypes, mode of, 



75, 77. 



Sulphuret of Carbon, used for bright 

 plating,jll9. 



Table of Exciting Solutions for Bat- 

 teries, 51. 



Table Experiments upon Amalgama- 

 tion, 51. 



Relative Intensity of Batteries, 



74. 



Test of Free Cyanide of Pot- 

 assium in Solutions, 118. 

 Table Covers, gilt, 78. 

 Taking Silver from Copper, 113. 

 Test for Cyanide of Potassium, 117. 

 Thenard, 2. 

 Thimble, Gold required to Gild, 



134. 



Theoretical Observations, 139. 

 Theory of Electrolysis proposed, 142. 

 Time taken by different Batteries to 



deposit 1 Ib. of Copper, 67. 

 Tin, gilding upon, 129. 



depositing of, 136. 



solutions of, 136. 



Confervas, phenomenon of, 137. 



Transfer-paper, preparation of, 81. 



of Solutions, 142. 



of Elements of Electrolyte, 



142. 



Unequal Action upon Electrodes, 



130. 

 Use of Metal Moulds, 61. 



Intensity Batteries, 73. 



Dipping in Nitrate of Mercury, 



110. 



Van Mons, 2. 



Vauquelin, 2. 



delta's Discovery, 1. 



Voltaic Pile, how constructed, 1. 



Waste Zinc, recovery of Mercury 



from, 70. 

 Wax, to prepare for Moulds, 53. 



to take moulds in, 53. 



and Rosin, 54. 



Moulds taken from Plaster 



Models, 57. 

 Watch Case Gilt, how much gold re- 

 quired, 134. 



Weight of Silver deposited, how 

 ascertained, 112. 



loss of, by dipping, 112. 



Wire, Iron, Coated, 96. 

 Wollaston's Experiments on Galva- 

 nism, 4. 



Wollaston's Battery, 20. 

 modification, 31. 



