Mixture of Wine. (Guy’s Hosp.) Syn. Mistura vini. White wine, 6 fl. oz.; yolks of 2 eggs; sugar, 1⁄2 oz.; oil of cinnamon, 3 drops.—Dose, 1 oz.

Mixture, Worm. Syn. Mistura anthelmintica, M. vermifuga, L. Prep. 1. (Collier.) Sulphate of iron, 20 gr.; infusion of quassia, 8 fl. oz.—Dose. Two table-spoonfuls every morning fasting.

2. (Copland.) Valerian, 2 dr.; worm-seed,

4 dr.; boiling water, 8 fl. oz.; macerate 1 hour, strain, and add of assafœtida, 1 dr., previously triturated with the yolk of one egg. As the last.

3. (Richard.) Root of male fern, 1 oz.; water, 9 fl. oz.; boil to 6 fl. oz., strain, and add, of sulphuric ether, 1 dr.; syrup of tansy, 1 fl. oz. In tapeworm; as above.

Mixture, Zinc. Syn. Mistura zinci, M. z. sulphatis, L. Prep. (Collier.) Sulphate of zinc, 5 gr.; sulphate of quinine, 10 gr.; compound infusion of roses, 2 fl. oz. Tonic.—Dose. A teaspoonful 2 or 3 times a day, in a glass of water. Said to be very efficacious in the cure of coughs of a spasmodic character.

MIXTURES (Arithmetic of). The constantly recurring necessity in business and chemical manipulations of determining the value of mixtures, and of producing articles and preparations of different strengths or prices to those already in stock, has rendered a ready means of making such calculations an indispensable qualification in almost every department of trade and industrial art. As we address ourselves to the intelligent operative and busy tradesman, as well as to those more blessed by education and leisure, we feel we are bestowing a boon on many of our readers in giving a short, but sufficient, outline of this useful branch of commercial arithmetic, which is most intimately connected with the objects of the present work.

1. To determine the price of a mixture from the value and quantity of each ingredient of which it is composed.—Rule. Divide the ‘gross value’ by the ‘gross saleable’ or ‘useful quantity,’ the quotient is the value or cost per gallon, pound, &c., as the case may be.—Example. Required, the value per gallon of a hogshead of wine containing—

s.d.£s.d.
30gallons @106=15150
20”126=12100
13”146=986
———————
63divide into37136
——————
Cost per gallon011111⁄2

2. To determine the proportions of substances or articles of different values or strengths which must be taken to prepare a mixture of any other value or strength.—Rule. Arrange the ‘prices’ or ‘strengths of the ingredients’ in a column, and link them together in pairs; each of those above the required price being always connected with another below it. Then set the difference between the required price and these numbers, alternately against those they are linked to; when they will indicate the quantities to be taken, as in the following examples:—a. Required the proportions of tea at 3s., 4s., 6s., and 7s., that must be taken to produce a mixture 5s. the pound. Here