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Bean-shot Copper for Alloying 44 Chemical name for Copper 44 Nickel 45 Cronstedt 45 Density of Nickel 45 Ductility of Nickel 45 Malleability of Nickel 45 Fusibility of Nickel 45 Nickel Coinage 45 Nickel Alloys 46 Electro-plate 46 Zinc 46 Spelter 46 Zinc in Silver Solder 46 Annealing of Zinc 47 Specific Gravity of Zinc 47 Spelter used by Jewellers 47 Tarnishing of Zinc 47 Malleability of Zinc 48 Ductility of Zinc 48 Tenacity of Zinc 48 Tin 48 Ancient Workers in Tin 48 Density of Tin 48 Christianity and Tin 48 Fusibility of Tin 48 Dissolving of Tin 48 Tin alloyed with Gold 49 Tin alloyed with Silver 49 Tin in Silversmith’s Solders 49 Vapours of Tin injurious to Gold 49 Malleability of Tin 49 Ductility of Tin 49 Tenacity of Tin 49 Scientific Name for Tin 50 Table of Metallic Elements 50 Melting-points of the Principal Metals 51 Physical Properties of the Principal Metals 51

CHAPTER VI.

Various Qualities of Silver.

Mechanical Uses of Silver	52
Filigree Work	52
Birmingham	52
London	52
Indian	53
Chief Places of Filigree Manufacture	53
Continental Cheap Labour	54
Hand-made Articles	54
Process of Workmanship	55
Maltese Filigree	55
Chinese and Japanese Filigree	56
Filigree of Norway and Sweden	56
Filigree working, Necessity for Pure Metal	56
Old Method of making Filigree	57
Twisting of the Wire	58
Lathe, Use of	58
Flattening of Twisted Wire for Filigree	59
New Method of preparing Filigree Wire	59
English Standards for Silver	60
English Coinage	61
Standard Silver Alloy	61
Alloy for Hall-marking	62
Standard Alloy of the Highest Quality	62
Standard Alloy for Hall-marking	62
Alloy commonly used in England	63
Qualities used by English Silversmiths	63
Drawbacks to Hall-marking	63
Method of calculating the Qualities of Silver	63
Silver Alloy No. 1, cost 4s. 7d. per oz.	64
”     No. 1, differently calculated	64
”     No. 2, cost 4s. 1d. per oz.	64
”     No. 2, differently calculated	public@vhost@g@gutenberg@html@files@47816@[email protected]#Page_64" class="pginternal"