Pure silver, 11 oz. 2 dwts.; copper, 22 dwts. Melt.

Silver Imitations

Copper 1 lb.; tin, ¾ oz.; melt. This composition will roll and ring very near to silver.

Britannia Metal

Copper, 1 lb.; tin, 1 lb.; regains of antimony, 2 lbs.; melt together, with or without a little bismuth.

Genuine German Silver

Iron, 2½ parts; nickel, 31½ parts; zinc, 25½ parte; copper, 40½ parts; melt.

Fine White Herman Silver

Iron, 1 part; nickel, 10 parts; zinc, 10 parts; copper, 20 parts; melt.

Pinch-Beck

Copper, 5 parts; zinc, 1 part; melt the copper, thon add the zinc.

Jeweller's Metal

Copper, 30 parts; tin, 7 parts; brass, 10 parts. Mix.

French Gold Plate

1. Gold, 92 parts; copper, 8 parts. 2. Gold, 84 parts; copper, 16 parts. 3. Gold, 75 parts; copper, 25 parts.

Bidery

Copper, 48.48 parts; tin, 6.60 parts; zinc, 33.80 parts; lead, 12.12 parts.

Best Brass For Clocks

Rose copper, 85 parts; zinc, 14 parts; lead, 1 part.

Alloy For Watch Pinion Sockets

Gold, 31 parts; silver, 19 parts; copper, 3J parts; palladium, 1 part.

How To Reduce Hair-Springs

Immerse the springs about 2 or 3 seconds in nitric avid, 3 drops to one teaspoonful of water. By this means you can reduce them to any extent. It requires very careful manipulation, experience, and good judgment.

Albata Metal

Nickel, 3 to 4 parts; copper, 20 parts; zinc, 16 parts. Used for plated goods.

British Plate

Nickel, 5 to 6 parts; copper, 20 parts; zinc, 8 to 10 parts. Used for plated goods.

Chantry's Hard Alloy

Copper, 1 lb.; zinc. 2½ oz.; tin, 2½ oz. Razors as hard as tempered steel have been made from this alloy.

Hard White Metal For Buttons

Brass, 1 lb.; zinc, 2 oz.; tin, 1 oz.

Birmingham Platin

Copper, 8 parts; zinc, 5 parts.

German Silver

1. Copper, 40.62 parts; zinc, 43.76 parts; nickel, 15.62 parts. 2. Copper, 41.47 parts; zinc, 26.08 parts; nickel, 32.45 parts. 3. Copper, 55.55 parts; zinc, 5.55 parts; nickel, 38.90 parts. 4. Copper, 53.40 parts; zinc, 29.10 Darts; nickel, 17.50 parts. 5. (Alfenide contains a trace of iron.) Copper, 59.60 parts; zinc, 30.30 parts; nickel, 10.10 parts.

Britannia Metal

1. Copper, 0.30 parts; tin, 89.70 parts; zinc, 0.30 parts; antimony, 9.70 parts. 2. Copper, 1.85 parts; tin, 81 64 parts; antimony, 16.51 parts. 3. Copper, 0.91 parts; tin, 89.97 parts; antimony, 9.12 parts. 4. Tin, 90.00 parts; antimony, 10 parts. 5. Copper, 1.78 parts; tin; 89.30 parts; antimony, 7.14 parts; bismuth, 1.78 parts.

Gun Metal

Copper, 90 parts; tin, 10 parts.

Melting Point Of Metals

Iron fuses at 27870 Fahr.; gold at 2016o; silver, 1873°; copper, 1996°; zinc, 773°; antimony, 809°; bismuth, 476° to 507°; nickel, 630°; tin, 442°; lead, 334°; mercury volatilizes at 670°.

Chinese Gong Metal

Copper. 78.00 parts; tin, 22.00.

Alloy For Gun Mountings

Copper, 80 parts; tin, 3; zinc, 17.

Bell Metal

1. Copper, 60 parts; tin, 40 parts. 2. Copper, 80 parts; tin, 20 parts. 3. (Thomson's) Copper, 80 parts; tin, 10.10 parts; zinc, 5.60 parts; lead, 4.30 parts.

White Metal For Table Bells

Copper 2.06 parts, tin 97.31 parts, bismuth 0.63 parts.

Clock Bell Metal

Copper 75.19 parts, tin 48.81 parts.

Socket Metal For Locomotive Axle-Trees

1. Copper 86.03, tin 13. 97; 2. (French) Copper 82 parts, tin 10 parts, zinc 8 parts; 3. (St phenson's) Copper 79 parts, tin 8 parts, zinc 5 parts, lead 8 parts; 4. (Belgian) Copper 89.02 parts, tin 2.44 parts, zinc 7.76 parts iron, 0.78 parts; 5. (English) Copper, 73.96 parts, tin, 9.49 parts, zinc, 9.03 parts, lead, 7.09 parts, iron, 0.43 parts.

Brass

1. Copper 73 parts, zinc 27 parts; 2. Copper 65 parts, zinc 35 parts; 3. Copper 70 parts; zinc 30 parts.

Alloy For Mechanical Instruments

Copper 1 lb., tin 1 oz.

Malleable Brass

1. Copper 70.10 parts, zinc 29.90 parts. 2. (Superior) Copper GO parts, zinc 40 parts.

Button Maker's Metal

1. Copper 43 parts, zinc 67 parts; 2. Copper 62.22 parts, tin 2.78 parts, zinc 35.00 parts.

Metal For Sliding Levers Of Locomotives

1. Copper 85.25 parts, tin 12.75 parts, zinc 2.00 parts; 2. (Fenton's) Copper 5.50 parts, tin 14.50 parts, zinc 80 parts.

Alloy For Cylinders Of Locomotives

Copper 88.63 parts, tin 2.38 parts, zinc 6.99 parts.

Alloy For Stuffing Boxes Of Locomotives

Copper 90.06 parts, tin 3.56 parts, zinc 6.38 parts.

Amalgam For Mirrors

1. Tin 70 parts, mercury 30 parts; 2, (For curved mirrors) tin 80 parts; mercury 20 parts; 3. Tin 8.33 parts, lead 8.34 parts, bismuth 8.33 parts, mercury 7.". parts; 4. (For spherical mirrors) Bismuth 80 parts, mercury 26 parts.

Reflector Metal

1. (Duppler's) Zinc 20 parts, silver 80 parts, 2. Copper 66.22 parte, tin 33.11 parts, arsenic 0.67 parts; 3. (Coop-er's) Copper 57.86 parts, tin 27.28 parte, zinc 3.30 parts, arsenic 1.65 parts, platinum 9.91 parts; 4. Copper 64 parts, tin 32.00 parts, arsenic 4.00 parts; 5. Copper 82.18 parts, lead 9.22 parts, antimony 8.60 parts; 6. (Little'8) Copper 69.01 parts, tin 30.82 parts, zinc 2.44 parts, arsenic 1.83 parts.

Metal For Gilt Wares

1. Copper 78,47 parts, tin 2.87 parts, zinc 17.23 parts, lead 1.43 parts; 2. Copper 64.43 parts, tin 0.25 parts, zinc 32.44 parts, lead 2.86 parts; 3. Copper 72.43 parts, tin 1.87 parts, zinc 22.75 parts, lead 2.96 parts; 4. Copper 70.90 parts, tin 2.00 parts, zinc 24.05 parts, lead 3.05 parts.

Spurious Silver Leaf

Tin 90.00 parts, zinc 9.91 parts.

Shot Metal

1. Lead 97.07 parts, arsenic 2.93 parts; 2. Lead 99.60 parts, arsenic 0.40 parts.

Bismuth Solder

Tin, 33.33 parts; lead, 33.33 parts, bismuth, 33.34 parts.

Alloy For Calico Printing Blocks

Tin, 50.00 parts; lead, 33.34; bismuth, 16.66 parts.

Amalgam For Electrical Machines

1. Tin, 25 parts; zinc, 26 parts; mercury, 50 parts; 2. Tin, 11.11 parts; zinc, 22.22 parts; mercury, 66.67 parts.

Type Metal

1. (For smallest and most brittle types) Load, 3; antimony, 1; 2. (For small, hard, brittle types) Lead, 4; antimony, 1; 3. (For types of medium size) Lead, 5; antimony, 1; 4. (For large types) Lead, 6; antimony, 1; 5. (For largest and softest types) Load, 7; antimony, 1. In addition to lead and antimony, typo metal also contains 4 to 8 percent of tin, and sometimes 1 to 2 per cent. of copper. Stereotype plates are made of lead, 20 parts; antimony, 4 parts; tin, 1 part.

Brass For Wire

Copper, 34 parts; calamine, 56 parts; mix.

Britannia Metal

1. Tin, 82 parts; load, 18 parts; brass, 5 parts; antimony 5 parts; mix. 2. Brass, 1 part; antimony, 4 parts; tin, 20 parts; mix. 3. Plate-brass, tin, bismuth, and antimony, or each equal parts. Add this mixture to melted tin until it acquires the proper color and hardness.

Bronze

1. Copper, 83 parts; zinc, 11 parts; tin, 4 parts; lead, 2 parts; mix. 2. Copper, 14 parts; melt, and add zinc, 6 parts; tin, 4 parts; mix.

Ancient Bronze

Copper, 100 parts; lead and tin, each 7 parts; mix.

Alloy For Bronze Ornaments

Copper, 82 parts; zinc, 18 parts; tin, 3 parts: mix.

Beautiful Red Bronze Powder

Sulphate of copper, 100 parts; carbonate of soda, 80 parte; apply heat until they unite into a mass; then cool, and add copper-filings, 15 parts. Well mix, and keep them at a white heat for 20 minutes; then cool, powder, wash and dry.

Bronzing Fluid For Guns

Nitric acid, sp. gr. 1.2; nitric ether, alcohol, murate of iron, each 1 part; mix, then add sulphate of copper, 2 parts, dissolved in water, 10 parts.

Cannon Metal

Take tin, 10 parts; copper, 90 parts; melt.

Statuary Bronze

1. Copper, 88 parts; tin, 9 parts; zinc, 2 parts; lead, 1 part. 2. Copper, 82½ parts; tin, 5 parts; zinc, 10½ parts; lead, 2 parts. 3. Copper, 90 parts; tin, 9 parts; lead, 1 part.

Bronze For Medals

Copper, 89 parts; tin, 8 parts; zinc, 3 parts.

Bronze For Large Cannon

Copper, 90; tin, 7.

Bronze For Small Cannon

Copper, 93; tin, 7.

Alloy For Symbals

Copper, 80; tin, 20.

Mirrors Of Reflecting Telescopes

Copper, 100; tin, 50.

White Argentine

Copper, 8; nickel, 3; zinc, 35. This beautiful composition is in imitation of silver.

Chinese Silver

Silver, 2.5; copper, 65.24; zinc, 19.52; cobalt of Iron, 0.12; nickel, 13.

Tutenag

Copper, 8; nickel, 3; zinc, 5.

Printing Characters

Lead. 4; antimony, 1. For stereotype plates, lead, 25; antimony, 4; tin, 1.

Fine White German Silver

1. For Castings. Lead, 8 parts; nickel. 20 parts; zinc, 20 parts; copper, 60 parts; mix. 2. For Rolling. Nickel, 5 parts; zinc, 4 parts; copper, 12 parte; mix.

Imitation Platinum

Melt together 8 parts brass and 5 of zinc. This alloy very closely resembles platinum.

Imitation Gold

Platina, 8 parts; silver, 4 parts; copper, 12 parts; melt all together.

Imitation Silver

Block-tin, 100 parts; antimony, 8 parts; bismuth, 1 part; copper, 4 parts; melt all together.

Tombac, Or Red Brass

Melt together, 8 parts of copper and 1 part of zinc.

Parisian Bell Metal

Copper, 72 parts; tin, 26½ parts; iron, 1½ parts; used for the bells of small ornamental clocks.

Bell Metal

1. Copper, 25 parts; tin, 5 parts; mix. 2. Copper, 79 parts; tin, 2G parts; mix. 3. Copper, 78 parts; tin, 22 parts; mix.

Prince's Metal

1. Copper, 3 parts; zinc, 1 part. 2. Brass, 8 parts; zinc, 1 part. 3. Zinc and copper, equal parts : mix.

Queen's Metal

1. Lead, 1 part; bismuth, 1 part; antimony, 1 part; tin, 9 parts; mix. 2. Tin, 9 parts; bismuth, 1 part; lead, 2 parts; antimony, 1 part, mix by melting.

Brass

Copper, 3 parts; melt, then add zinc 1 part.

Button-Maker's Fine Brass

Brass, 8 parts; zinc 5 parts.

Button-Maker's Common Brass

Button-brass, 6 parts; tin, 1 part; lead, 1 part; mix.