Part 308

The barrel and the wheels are cleaned like those of a watch.

The cylinder should be handled carefully. The holes should be well cleaned. Oil should be put only on the pivots, especially none on the part of the arbor to which the cylinder is attached. It is the first piece to be replaced, care being taken to see that the arbor turns freely, but without play, between the bridges. When it is in position, put in the escapement, then the barrel, and finally the comb.

The comb, representing the musical part of a simple box, cannot receive too much care. Before replacing it examine the springs closely, and in supplying the ones that are lacking, take for the model of size and form those resembling them the most. If the parts have been put together properly, then, as soon as the comb is screwed in its place, these should be found in good working order: the levée (lift)—that is, that the pins do not lift the teeth too much or too little; the tombée (fall)—that is, that the chords, the bass, the medium, and the treble, fall together; and the visée (pointing)—that the pins catch at the center of the ends of the teeth.

MUSLIN, PAINTING ON: See Painting.

«MUSTACHE FIXING FLUID.»

Balsam of Tolu 1 part Rectified spirit 3 parts Jockey club 1 part

Dissolve the balsam in the liquids. Apply a few drops to the mustache with a brush, then twist into the desired shape.

«MUSTARD PAPER.»

I.—India rubber 1 part Benzol 49 parts Black mustard in powder, a sufficiency.

Dissolve the India rubber in the benzol, then stir in the mustard until the mixture is of a suitable consistence for spreading. It was further recommended to remove the fixed oil from the mustard by percolation with benzol. Mustard paper thus made is of good quality, very active, and keeps well. {481}

II.—Black and white mustard, in No. 60 powder, deprived of fixed oil 1 part Benzol solution of India rubber (1 in 40) 4 parts

Mix to a smooth mass, and spread the same over one side of a suitable paper by means of a plaster-spreading machine, or passing the paper over the mass contained in a suitable shallow vessel. Expose to warm air for a short time to dry. Preserve the dry paper in well-closed boxes. It may be useful to know that mustard paper, after spreading, should not be long exposed to light and air. By so doing not only does the mustard bleach but the rubber soon perishes. Moreover, mustard paper is hygroscopic, so that in a moist atmosphere it soon loses its virtue. It is, therefore, highly important that mustard paper should be rapidly dried in a warm atmosphere with free ventilation, then at once stored in well-closed packets. Thus prepared they keep well and remain active for many years.

MUSTARDS: See Condiments.

MYRRH ASTRINGENT: See Dentifrices.

«NAIL, INGROWING.»

Copious applications of dried powdered alum are sufficient to cure every case of ingrowing nail in about 5 days. The applications are not painful in the least, and the destruction of the pathologic tissue results in the formation of a hard, resistant, and non-sensitive bed for the nail, a perfect cure for the ingrowing tendency. Apply a fomentation of soap and water for 24 hours beforehand and then pour the alum into the space between the nail and its bed, tamponing with cotton to keep the alum in place, and repeating the application daily. The suppuration rapidly dries up, and pain and discomfort are relieved almost at once.

NAIL POLISHES: See Cosmetics.

NAPOLEON CORDIAL: See Wines and Liquors.

NAPHTHOL SOAP: See Soap.

«NEATSFOOT OIL.»

Crude neatsfoot oil 5,000 parts Alcohol, 90 per cent 2,500 parts Tannin 5 parts

Place in a clearing flask, agitate vigorously and allow to stand for 8 days in a warm room with daily repetition of the shaking. Then draw off the spirit of wine on top, rinse again with 1,000 parts of spirit of wine (90 per cent) and place the oil in a temperature of about 53 1⁠/⁠2° F. Allow to stand in this temperature for at least 6 weeks, protected from the light, and then filter.

NEEDLES, ANTI-RUST PAPER FOR: See Rust Preventives.

NEGATIVES, HOW TO USE SPOILED: See Photography.

NERVE PASTE: See also Dental Cements, under Cements.

Arsenious acid 4 parts Morphine sulphate 2 parts Clove oil 1 part Creosote, quantity sufficient to make a paste.

After the nerve is destroyed the following paste is to be put in the cavity:

Alum 1 part Thymol 1 part Zinc oxide 1 part Glycerine 1 part