Blacksmith Tongs.—Blacksmith tongs can now be purchased of the hardware dealer. The twelve-inch length are used for small work, and the fifteen or eighteen for heavier work. The twelve inch cost about 50 cents; the fifteen, 62, and the eighteen, 75 cents each.

Blow-Pipe.—Select a blow-pipe eight or ten inches in length, with bulb or without, as fancy may dictate. If the end where the mouth comes in contact be silver or nickle-plated, it will not taste of brass. If it be difficult to get one plated, tin it with soft solder by wetting with soldering acid, and melting the solder on it by holding it over the lamp. Wipe off all superfluous solder with a rag. The cost of plain eight or ten inch pipe is about 25 cents. Add about one-third or one-half this price for pipes with bulb.

Breeching Taps.—Breeching taps ought to be obtained in pairs, one to enter first and another to follow, cutting a full thread at the bottom. The prices per pair are for the ⅜ inch $2.25; ½ inch, $2.50; ⅝ inch, $2.75. For shot gun taps, ¾ inch, $3.00; ⅞ inch, $3.25. A stock with dies will cost about a like sum, but if the stock be fitted with only two sets of dies, it will be much less. The two threads used for rifle pins are 14 and 16 to the inch.

The 14 and 16 threads are not always adhered to. A house in Philadelphia say they use taps of 18 threads, and a firm in Pittsburg advertise taps of 20 threads per inch.

Calipers and Dividers.—The best length of spring calipers and dividers, for common bench work, is about four inches. The cost is from 50 cents to $1.50, according to quality.

Chisels.—The chisels, as used by stockers, are about half a dozen in number. The narrowest is about one-eighth of an inch wide, and the widest about half inch. The set of six will cost about a dollar or a dollar and a half.

Cutting Pliers.—A pair of cutting pliers, six inches in length, for cutting wire, are indispensable. Select those of good quality. Poor pliers of this description are poor, indeed. The cost will be from 75 cents to $1.50. There are patented pliers of this kind in market that are recommended by many who use them.

Drill Stock.—Many kinds are in market, from eight inches in length upward. Some are termed hand drills, and the larger ones, used against the breast, are called breast drills. The hand drills can be obtained as low as 50 cents and upward; the price of breast drills from two to three dollars. Select a drill stock, if one be required, of a size and strength to suit the work to which it will be used.

File Card.—This is for cleaning filings, dirt, etc., that may collect in files. It consists of a strip of common cotton card tacked to a piece of wood conveniently shaped to handle. It is also useful to clean the dirt and debris that will collect in screw taps. The cost is about 25 cents. Shown in [Fig. 5].