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Information is given in this department under the following conditions only: (1) No queries are answered by mail; (2) queries must reach us before the 15th of the month to be answered in the BULLETIN of the month following: (3) inquirers must in every instance be regular subscribers; and (4) names and addresses must be affixed to all communications.

Blackening Tan Shoes. 0. D. asks: "Will you publish directions for making a dye that will blacken tan shoes?”

Before attempting to stain tan shoes, the shoes should be cleaned thoroughly with soap and water and then dried, so as to remove all dirt as well as any fatty matter remaining from polishes.

Either of the following may then be applied :

The following are recommended in the literature:

1. Dissolve 1 ounce of yellow soap in 1/2 pints of boiling water. Then stir in 1 quart of boiled linseed oil. When cold, add 14 pint of gold size.

2. Take fine twilled calico. . Soak it in bullock's blood and dry. Then give it two or three coats of boiled oil, mixed with a little litharge, or with an ounce of gold size to every pint of the oil.

3. Thin ordinary paint with a strong solution of soap.

4. Dissolve rosin in hot boiled oil until it begins to thicken.

5. Mix chalk or pipe-clay in the finest powder, and in the purest state obtainable, to a thin paste with boiled oil.

6. Melt together 1 pint of boiled oil with 2 ounces each of beeswax and rosin.

7. Dissolve soft soap in hot water and solution of protosulphate of iron till no further precipitate is produced. Filter off, wash, and dry, and then form the mass into a thin paste with boiled oil.

All these compositions are painted on the cloth with an ordinary painter's brush. The fabric should be slightly stretched, both to avoid folds and to facilitate the penetration of the waterproofing mixture. To aid the penetration still further, the mixture should be applied hot. It is of the greatest importance that the fabric should not be damp when the composition is applied. It is best to have it warm as well as the composition.

If more than one coat is applied (three is the usual number), it is essential that the last coat be perfectly dry before the next is applied. Neglect of this precaution is the chief cause of stickiness, which frequently results in serious damage to the oilskins; they should be hung up when not in use, and allowed plenty of room.

It is inadvisable to use artificial heat in drying at any stage in the manufacture. The inflammability of oilskins may be lessened materially by the use of one of the ordinary fireproofing salts, such as tungstate of soda or alum, before the waterproofing process is carried out.

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Soldering Fluid.

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H. E. R. asks: "What acid or combination is used to solder cast-iron, steel, etc.?"

According to "Henley's Book of Recipes, Formulas, and Processes,” a satisfactory soldering fluid may be made by the use of ordinary soldering acid, to which has been added chloride of tin and sal ammoniac.

To make one gallon of this soldering Auid take 3 quarts of commercial muriatic and allow it to dissolve as much zinc as it will take up. This method is the one employed in the manufacture of ordinary soldering acid. The acid must be placed in an earthenware or glass vessel. The zinc may be sheet clippings or common plate spelter broken into small pieces.

Place the acid in the vessel, adding the zinc in small portions, so as to prevent boiling over. When all the zinc has been added and the action has stopped, it indicates that enough has been taken up. A little zinc must be left in the bottom, as otherwise the acid will be in excess.

Shake well to obtain a perfect mixture.

If the product is too thick add spirit to secure the proper fluidity.

Waterproofing Oilskins.

O. D. writes: "Please print directions for making paints or oil-dressings used in the manufacture of oilskins."

After this has been done there will remain some residue in the form of a black precipitate. This is the lead which all zinc contains, and which is not dissolved by the muriatic acid. This lead may be removed by filtration through cotton or by decantation.

Next, dissolve 6 ounces of sal ammoniac in a pint of warm water. In another pint dissolve 4 ounces of tin chloride. Now mix the three solutions together. The resulting solution will be slightly cloudy when the three have been mixed, but the addition of a few drops of muriatic acid will render it perfectly clear. Add only enough acid to produce a clear mixture. An excess of acid is injurious.

of therapeutics. We might say, however, that the pain-relieving virtues of laudanum are due to the absorption of the opium by the inner ear, and to offer a substitute for the laudanum requires a substance that will act in a similar manner. A combination of sweet oil with Auidextract of conium, hyoscyamus, or belladonna would perhaps be valuable in relieving the pain of earache. Certain persons, however, are particularly susceptible to the actions of hyoscyamus and belladonna.

A mixture of 1 drachm of campho-chloral (formed by rubbing to a liquid equal parts of camphor and chloral), 1/2 fluidounce of sweet almond oil, and 6 fluidounces of glycerin, when dropped in the ear twice a day and kept in place by putting a little cotton-wool in the ear, is also said to give relief in cases of earache. Only a few drops are required.

Mentholated Shaving Lotion and Witch-hazel Hair

Tonic. H. G. C. asks: "Will you publish formulas for an after-shaving lotion containing menthol, and for a hair tonic (containing witch-hazel) that will prevent scalpitching?"

Each of the following has been recommended as a satisfactory preparation for after-shaving lise:

Strontium Bromide and Potassium Citrate Incompatible.

The R. B. Drug Co. writes : "Here is a prescription received a short time ago: Tincture of belladonna...

40 minims.
Strontium bromide.

.2 drachms.
Solution of potassium citrate,
to make..

.......3 fluidounces. Make a soluticn. Directions: Teaspoonful in water after meals.

"We find that when the strontium bromide is dissolved in the solution of potassium citrate a heavy, white liquid is formed. The doctor who wrote the prescription seems to think that the fault lies in the ingredients rather than in the combination."

When strontium bromide is added to a solution of potassium citrate a heavy, white precipitate of strontium citrate is thrown down after a few minutes standing. The combination is an incompatible one, and the doctor should be so informed.


1 ounce.

...90 grains. Alcohol

..12 ounces. Triple extract heliotrope. .6 fluidrachms. Water, q. S......

..2 pints. Color to suit, using, possibly, turmeric, and filter until clear.

Benzoic acid.

.60 grains.

...60 grains. Acid boric.

120 grains. Menthol

30 grains. Thymol

15 grains. Eucalyptol

.5 drops. Oil cajuput

.3 drops. Oil laverider, Flor. best.

20 drops. Alcohol

.4 ounces. Water, q. S......

......16 ounces. Dissolve acids and borax in 12 ounces of water, using slight heat as required. Dissolve oils, menthol, and thymol in the alcohol. Then mix the two solutions, add 112 ounces of talcum, let stand 48 hours, shake occasionally, and filter.

A single application of the following is said to stop scalp-itching within an hour : Quinine sulphate...

2 drachms. Resorcin

1.20 grains. Menthol

.20 grains.
Tincture of capsicum..

.6 fluidrachms.
Tincture of cantharides. .6 fluidrachms.
Spirit of aromatic ammonia. ..4 fluidrachms.

.4 fluidrachms.

6 fluidounces. Witch-hazel, enough to make.. ......1 pint. Perfume to suit. No artificial coloring is required.

The directions are: Apply to scalp with fingertips, massage lightly every night for a week, then once a week for an in. vigorating tonic.

Trouble with Basham's Mirture. H. G. C. writes: "How can 'settling' in Basham's Mixture be prevented, and what is the cause of it?"

If made strictly according to the formula of the U. S. P., Basham's Mixture will deposit upon standing, but this can be prevented by doubling the quantity of glycerin directed; when so made the solution has been found to remain perfectly clear for a year.

A precipitate or cloudiness occurring at the time of manufacture, or shortly thereafter, is due to the formation of basic ferric acetate. To prevent this, it is imperative that the solution of ammonium acetate contains a slight excess of acid, which can be determined by testing with litmus.

Earache Remedies. W. P. W. & Co. ask: “Will you tell us of an earache remedy that is as effective as a combination of sweet oil and laudanum, but which does not come within the scope of the Harrison law?"

It is hardly within our province to discuss questions

A Question of Price. The C. Pharmacy writes: “Please tell us the proper price to charge for the following prescription :

Ointment of mercuric nitrate..... .2 drachms.

.....4 drachms. Mix. Directions: Apply well night and morning. "When we filled this prescription the customer

thought we overcharged him, so he asked for a copy. He afterwards informed us that a competitor filled the prescription for ten cents. Our charge was 40 cents."

According to the Evans rule for pricing, which is the system advocated by the BULLETIN, the proper charge may be arrived at by doubling the cost of the ingredients and container and adding a dollar an hour for time consumed in compounding. An investigation of prescription prices in Detroit, conducted a short time ago, showed the average minimum price for 4- to 8-drachm ointments to be 40 cents.

A Clear Mixture Impossible. O. D. asks: "Why cannot I get a nice, clear-looking mixture from the following?" Ammonium carbonate.

.9 grammes. Ammonium chloride.

.5 grammes. Syrup of tolu,

Syrup of acacia, of to make. .100 mils. Syrup of acacia contains some calcium arabinate, which, when it comes in contact with ammonium carbonate, causes a precipitation of calcium carbonate. Straining the mixture would remove not only the precipitate but also some of the activity of the preparation. If feasible, the doctor should be asked to alter the prescription.

Licorice Emulsion of Cod-liver Oil. R. H. N. writes: "Please publish a formula for an emulsion of cod-liver oil with licorice, similar to proprietary preparations of that nature.” The following is a popular combination : Cod-liver oil....

.2 fluidounces. Powdered extract of licorice. .2 drachm. Confection of almond...

...12 grains. Spirit of lavender compound .1 fluidrachm. Spirit of peppermint...

..35 minims. Syrup of tolu...

.7 fluidrachms. Triturate together the extract of licorice and confection of almond, mix well with the syrup of tolu, and add to this slowly the cod-liver oil with constant trituration. When all is emulsified add the spirits in portions.

This forms a dense, black, permanent emulsion in which the taste of the cod-liver oil is masked quite effectually.

Confection of almond is made by mixing 6 grammes of blanched almonds, 1 gramme of powdered acacia, and 3 grammes of sugar.

The Harrison Law Explained. T. B. S.—Yes, our brochure entitled "Observing the Harrison Law” includes a full reprint of the law itself. It also takes up all the regulations and rulings that have emanated from Washington, and it discusses court decisions that have been handed down in important cases. Every phase and aspect of the law and its enforcement is presented, and the booklet will be especially valuable to every retail druggist who desires to keep out of trouble. It has been prepared especially for the benefit of our readers, and the price is 25 cents post-paid.

Saw Palmetto Compound and the Harrison Law.

R. H. N. asks: “Why does elixir of saw palmetto compound come under the Harrison law?"

It doesn't. Elixir of saw palmetto compound, as we are familiar with it, is a mixture of sabal, sandalwood, and corn-silk. Such a mixture contains none of the proscribed narcotics, and we can see no reason for it being affected in any way by the Harrison law.

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Ointment for Burns. W. P. W. & Co. write: “Will you publish a formula for an ointment containing alum, phenol, ichthyol, zinc oxide, etc., that can be used in cases of burns?" The following is a frequently-used combination: Burnt alum...

2 parts. Phenol

part. Zinc oxide...

4 parts. Ichthyol

1 part. Benzoinated lard.

40 parts. Yellow petrolatum, q. s. ad..

.200 parts. An additional antiseptic and healing value may be imparted to the ointment by adding 2 parts of oil of pinus pumilio, and one part each of sassafras, eucalyptus, and sweet birch oils, to the mixture.

Elixir Carnep and Fennel.
C. E. S. asks: “Will you publish a formula for
elixir of catnep and fennel?”
Here is one:

Fluidextract of catnep. 1 fluidounce, 160 minims.
Fluidextract of fennel. . 1 fluidounce, 32 minims.
Oil of coriander.

.4 minims.
Oil of anise...

.....2 minims. Alcohol...

.1 Auidounce, 120 minims. Syrup, enough to make... 16 fluidounces.

Caramel, enough to color. Each fluidounce contains fluidextract of catnep, 40 minims, and fluidextract of fennel, 32 minims.

SOME ODD TWISTS OF ENGLISH.-Wanted—A furnished room by an old lady with electric lights.

Wanted—A room by a young gentleman with double doors.

Wanted-A man to take care of horses who can speak German.

Wanted—Saleslady in corsets and underflannels.

Wanted–Lady to sew buttons on the second story of the First National Bank Building.

Wanted-A dog by a little boy with pointed ears.

Wanted-A nice young man to run a pool-room out of town.

Wanted-Experienced nurse for bottled baby.

Wanted-A room for two young gentlemen about 30 feet long and 20 feet wide.

Wanted-A cow by an old lady with a crumpled horn.

For Sale-A cottage by an old gentleman with a bay window.

For Sale—A baby carriage; reason for selling going out of business.

For Sale-A nice mattress by an old lady full of feathers.-Sun Francisco Pacific Druggist.

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Eatered at the post-office at Detroit as second-class mail matter,

Copyright, 1916, by E. G. Swift.

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