Receipts for the use of Mechanists, Iron and Brass Founders, Tinmen, Coppersmiths, Turners, Dentists, Finishers of Brass, Britannia, and German Silver, and for other useful and important purposes in the Practical Arts.

The larger number of the following Receipts are the result of inquiries and experiments by a practical operative. Most of those which relate to the mixing of metals and to the finishing of manufactured articles, have been thoroughly tested by him, and will be found to produce the results desired and expected. The others have been collected from eminent scientific works.

No. 1. Yellow Brass, for Turning.- (Common article.) - Copper, 20 lbs.; Zinc, 10 lbs.; Lead from 1 to 5 ozs. Put in the Lead last before pouring off.

No. 2. Red Brass, for Turning. - Copper, 24 lbs.; Zinc, 5 lbs.; Lead, 8 ozs.

Put in the Lead last before pouring off.

No. 3. Red Brass, free, for Turning.- Copper, 160 lbs.; Zinc, 50 lbs.; Lead, 10 lbs.; Antimony, 44 ozs.

No. 4. Another Brass, for Turning. - Copper, 32 lbs.; Zinc, 10 lbs.; Lead, 1 lb.

No. 5. Best Red Brass, for Fine Castings. - Copper, 24 lbs.} Zinc, 5 lbs.; Bismuth, 1 oz.

Put in the Bismuth last before pouring off.

No.6. Bronze Metal. - Copper, 7 lbs.; Zinc, 3 lbs.; Tin, 2 lbs. No.7. Bronze Metal. - Copper, 1 lb.; Zinc, 12 lbs.; Tin, 8 lbs. No. 8. Bell 31etal, for large Bells.- Copper, 100 lbs.; Tin, from 20 to 25 lbs.

No. 9. Bell Metal, for small Bells. - Copper, 3 lbs.; Tin, 1 lb.

No. 10. Cock Metal - Copper, 20 lbs.; Lead, 8 lbs.; Litharge, 1 oz.; Antimony, 3 ozs.

No. 11. Hardening for Britannia. - (To be mixed separately from the other ingredients.) - Copper, 2 lbs.; Tin, 1 lb.

No. 12. Good Britannia Metal.- Tin, 150 lbs.; Copper, 3 lbs.; Antimony, 10 lbs.

No. 13. Britannia Metal, 2d quality.- Tin, 140 lbs.; Copper, 3 lbs.; Antimony, 9 lbs.

No. 14. Britannia Metal, for Casting. - Tin, 210 lbs.; Copper,

4 lbs.; Antimony, 12 lbs.

No. 15. Britannia Metal, for Spinning. - Tin, 100 lbs.; Britannia Hardening, 4 lbs.; Antimony, 4 lbs.

No. 1G. Britannia Metal, for Registers. - Tin, 100 lbs.; Hardening, 8 lbs.; Antimony, 8 lbs.

No. 17. Best Britannia, for Spouts. - Tin, 140 lbs.; Copper, 3 lbs; Antimony, 6 lbs.

No. 18. Best Britannia, for Spoons. - Tin, 100 lbs.; Hardening,

5 lbs.; Antimony, 10 lbs.

No. 19. Best Britannia, for Handles - Tin, 140 lbs.; Copper, 2 lbs.; Antimony, 5 lbs.

No. 20. Best Britannia, for Lamps, Pillars, and Spouts. - Tin, 300 lbs.; Copper, 4 lbs.; Antimony, 15 lbs.

No. 21. Casting - Tin, 100 lbs; Hardening, 5 lbs.; Antimony, 5 lbs.

No. 22. Lining Metal, for Boxes of Railroad Cars. - Mix Tin, 24 lbs.; Copper, 4 lbs.; Antimony, 8 lbs.(for a hardening); then add Tin, 72 lbs.

No. 23. • Fine Silver Colored Metal. - Tin, 100 lbs.; Antimony, 8 lbs.; Copper, 4 lbs.; Bismuth, 1 lb.

No. 24. German Silver, First Quality for Casting. - Copper, 50 lbs.; Zinc, 25 lbs.; Nickel, 25 lbs.

No. 25. German Silver, Second Quality for Casting. - Copper, 50 lbs.; Zinc, 20 lbs.; Nickel, (best pulverized,) 10 lbs.

No. 2G. German Silver,/or Rolling. - Copper, GO lbs.; Zinc, 20 lbs.; Nickel, 2.5 lbs.

No. 27. German Silver, for Bells and other Castings. - Copper, 60 lbs.; Zinc, 20 lbs.; Nickel, 20 lbs.; Lead, 3 lbs.; Iron, (that of tin plate being best,) 2 lbs.

No. 28 Imitation of Silver. - Tin, 3 ozs.; Copper, 4 lbs.

No. 29. Pinchbeck. - Copper, 5 lbs.; Zinc, 1 lb.

No. 30. Tombac - Copper, 16 lbs.; Tin, 1 lb.; Zinc, 1 lb.

No. 31. Red Tombac. - Copper, 10 lbs.; Zinc, 1 lb.

No 32. Hard White Metal. - Sheet Brass, 32 ozs.; Lead,2 ozs.; Tin, 2 ozs.; Zinc, 1 oz.

No. 33. Metal for Taking Impressions. - Lead, 3 lbs.; Tin, 2 lbs.; Bismuth, 5 lbs.

No. 34. Spanish Tutania. - Iron or Steel,8 ozs.; Antimony, 16 ozs; Nitre 3 ozs.

Melt and harden 8 ozs. Tin with 1 oz. of the above compound.

No. 35. Another Tutania. - Antimony, 4 ozs.; Arsenic,1 oz.; Tin, 2 lbs.

No. 3G. Gun Metal. - Bristol Brass, 112 lbs.; Zinc, 14 lbs.; Tin, 7 lbs.

No. 37. Rivet Metal. - Copper, 32 ozs.; Tin, 2 ozs.; Zinc, 1 oz.

No. 38. Rivet Metal, for Hose - Tin, 64 lbs.; Copper, 1 lb.

No. 39. Fusible Allot, (which melts in boiling water.) - Bismuth, 8 ozs.; Tin, 3 ozs.; Lead, 5 ozs.

NO.40. Fusible Allot, for Silvering Glass. - Tin, 6 ozs.; Lead, 10 ozs.; Bismuth, 21 ozs; Mercury, a small quantity.

No. 41. Solder, for Gold. - Gold, 6 pwts.; Silver, 1 pwt.; Copper, 2 pwts.

No 42. SOLDER, for Silver. - (For the use of Jeweller.s)-Fine Silver, 19 pwts; Copper, 1 pwt.; Sheet Brass, 10 pwts.

No. 43 White Solder, for Silver. - Silver, I oz; Tin, 1 oz.

No.44. White Soldier, for raised Britannia Ware. - Tin, 100 lbs., Copper, 3 ozs.; to make it free, add Lead, 3 ozs.

No 46 Best Soft Solder, for Cast Britannia Ware. - Tin, 8 lbs.; Lead, 5 lbs.

No. 46, Yellow Solder, for Brass or Copper. - Copper, 1 lb.; Zinc, 1 lb.