4. (Ricord.) Tannin, 2-1/2 dr.; aromatic wine (hot), 1/2 pint; dissolve.

5. Bistort and pomegranate peel, of each 2 oz.; sal ammonia, 1/4 oz.; red

wine, 1 pint.; infuse at a gentle heat. The above are used in hæmorrhages,

piles, prolapsus, &c.

=Fomentation of Belladon'na.= _Syn._ FOTUS BELLADONNÆ, L. _Prep._

(Ophthalmic Hosp.) Extract of belladonna, 1 dr.; boiling water, 1 pint.

Used to dilate the pupil in certain affections of the eye; it is usually

applied on the forehead.

=Fomentation of Bitter-sweet.= _Syn._ DECOCTUM DULCAMARÆ, L. _Prep._

Bitter-sweet stalks, 10 dr.; water, 1-1/2 pint; boil to a pint, and

strain.

=Fomentation of Cham'omile.= _Syn._ FOMENTATIO ANTHEMIDIS, L. _Prep._

Chamomiles, 2 oz.; water, 3 pints; boil 10 minutes, and strain with

expression. Emollient.

=Fomentation, Com'mon.= _Syn._ FOTUS COMMUNIS. (L. 1744.) _Prep._ Dried

southernwood, sea wormwood, chamomile, of each 1 oz.; dried bay leaves,

1/2 oz.; water, 5 pints; boil slightly, and strain.

=Fomentation, Compound of Hemlock.= (Guy's Hosp.) _Syn._ FOMENTUM CONII

COMPOSITUM. _Prep._ Dried hemlock, 2 oz.; dried chamomiles, 1/2 oz.;

boiling water, 1-1/2 pint; macerate for 2 hours, strain, and press.

=Fomentation, Diuret'ic.= _Syn._ FOMENTATIO DIURETICA, L. _Prep._

(Trousseau.) Tinctures of squills and foxglove, of each 2 oz.; hot water,

6 fluid oz.; mix. Applied by lint or linen compresses to the insides of

the thighs, in dropsies, when the stomach will not bear diuretics.

=Fomentation of El'der Flowers.= _Syn._ FOTUS SAMBUCI, L. _Prep._ From

elder flowers, 1 oz.; boiling water, 2 quarts; digest in a hot place for 1

hour, and express the liquor. Emollient.

=Fomentation, Emol'lient.= _Syn._ FOMENTATIO EMOLLIENS. L. _Prep._ 1.

Marshmallow root and poppy heads, of each 1 oz.; water, 3 pints; boil to a

quart, and strain.

2. (P. Cod.) Emollient herbs, 1 oz.; boiling water, 1 quart; infuse 1

hour, and strain with expression. (See _above_.)

=Fomentation, Foxglove.= _Syn._ FOMENTUM DIGITALIS. Dried foxglove, 1 oz.;

boiling water, 1-1/2 pint; infuse, and strain.

=Fomentation of Galls.= _Syn_ FOMENTUM GALLÆ. _Prep._ Bruised galls, 1/2

oz.; boiling water, 2 lbs.; macerate for an hour and strain.

=Fomentation, Narcot'ic.= _Syn._ FOMENTATIO NARCOTICA, L. _Prep._ (P.

Cod.) Narcotic herbs, 1 oz.; boiling water, 1-1/2 pint; infuse as last.

=Fomentation, Poppy.= _Syn._ FOMENTUM PAPAVERIS. As DECOCTION OF POPPIES.

=Fomentation, Resol'vent.= _Syn._ FOTUS RESOLVENS, L. _Prep._ (Richard.)

Fomentation of elder flowers, 8 fl. oz.; liquor of diacetate of lead, 1/2

fl. dr.; mix. Used to discuss tumours, &c.

=Fomentation, Stim'ulant.= _Syn._ FOMENTATIO STIMULANS, L. _Prep._ 1.

Sesquicarbonate of ammonia, 1 oz.; tincture of cantharides, 2 fl. oz.;

warm water, 1 pint.

2. Household mustard, 4 oz.; hot water, 1-1/2 pint; mix. Both the above

are rubefacient and counter-irritant, and excellent in rheumatism,

neuralgia, &c.

=Fomentation, Tannin.= _Syn._ FOMENTUM TANNINI. (Ricord.) _Prep._ Tannin,

2 dr.; aromatic wine, 8 oz.

=Fomentation, Ver'mifuge.= _Syn._ FOMENTATIO VERMIFUGA, FOTUS

ANTHELMINTICUS, L. _Prep._ Leaves and flowers of tansy, wormwood, and

chamomile, of each 3 oz.; water, 1 quart; boil to 1-1/2 pint, and strain.

Applied to the abdomen, &c., in worms.

=Fomentation, Wine.= _Syn._ FOTUS VINOSUS (Par. Cod.) _Prep._ Red wine, 2

pints; honey 4 oz.

=FOOD.= _Syn._ CIBUS, MATERIA ALIMENTARIA, L. Anything which feeds or

promotes the natural growth of organic bodies, by supplying them with

materials which, by assimilation, may be converted into the substances of

which they are composed; or which, by its decomposition or slow

combustion, maintains the temperature, or some other essential condition

of life, at the proper standard. The numerous articles employed as food

are all compounds; and in many cases they consist of mechanical mixtures

or chemical combinations of two or more compounds. Organized matter, or

that which has possessed either animal or vegetable life, or which has

been produced by living organs, seems to be alone capable of assimilation,

to any extent, by the animal system; and hence it is from the organic

kingdom that our aliments are necessarily derived. Water, iron, earthy

phosphates, chloride of sodium, and other salts, which form the inorganic

constituents of the body, though not of themselves nourishing, are also

assimilated when taken in conjunction with organic aliments, and then

contribute essentially to nutrition. In the animal and vegetable

substances employed as food, these inorganic compounds are provided in

small but sufficient quantities to meet the requirements of the healthy

body, and in this state of combination alone can they be regarded in the

light of aliments. A complete consideration of this subject embraces, not

only all the substances used as food, but also those things which when

taken with them improve their flavour, promote their digestion, and render

them more wholesome and nutritive; and also their preparation for the

table in its various relations with health and disease.

The following 'BILLS OF FARE,' for which we are indebted chiefly to Soyer,

Rundell, and others, exhibit the various articles in season at different

periods of the year.

FIRST QUARTER. January.--Poultry and game: Pheasants, partridges, hares,

rabbits, woodcocks, snipes, turkeys, capons, pullets, fowls, chickens, and

tame pigeons.--Fish: Carp, tench, perch, lampreys, eels, cray-fish, cod,

soles, flounders, plaice, turbot, thornback, skate, sturgeon, smelts,

whitings, lobsters, crabs, prawns, and oysters.--Vegetables: Cabbage,

savoys, colewort, sprouts, leeks, onions, beet, sorrel, chervil, endive,

spinach, celery, garlic, scorzonera, potatoes, parsnips, turnips, brocoli

(white and purple), shalots, lettuces, cresses, mustard, rape, salsafy,

and herbs of all sorts (some dry and some green); cucumbers, asparagus,

and mushrooms are also to be had, though not in season.--Fruit: Apples,

pears, nuts, walnuts, medlars, and grapes.

February and March.--Meat, fowls, and game, as in January, with the

addition of ducklings and chickens.--Fish: As the last two months (cod is

not thought so good from February to July, although it is still sold at

the fishmonger's).--Vegetables: The same as the previous months, with the

addition of kidney-beans.--Fruit: Apples, pears, and forced strawberries.

SECOND QUARTER. April, May, and June.--Meat: Beef, mutton, veal, lamb, and

venison (in June).--Poultry: Pullets, fowls, chickens, ducklings, pigeons,

rabbits, and leverets.--Fish: Carp, tench, soles, smelts, eels, trout,

turbot, lobsters, chub, salmon, herrings, cray-fish, mackerel, crabs,

prawns, and shrimps.--Vegetables: As before; and in May, early potatoes

and cabbages, peas, radishes, kidney-beans, carrots, turnips,

cauliflowers, asparagus, artichokes, and numerous salads (forced).--Fruit:

(in June) strawberries, cherries, melons, green apricots, and currants and

gooseberries for tarts; pears, grapes, nectarines, peaches, and some other

fruit.

THIRD QUARTER. July, August, and September.--Meat, as before.--Poultry,

&c.: Pullets, fowls, chickens, rabbits, pigeons, green geese, leverets,

and turkey poults. Two former months, plovers and wheat-ears (in

September), partridges, geese, &c.--Fish: Cod, haddocks, flounders,

plaice, skate, thornback, mullets, pike, carp, eels, shellfish (except

oysters), and mackerel (during the first two months of the quarter, but

they are not good in August).--Vegetables: Of all sorts, beans, peas,

French beans, &c.--Fruit: (In July)--Strawberries, gooseberries,

pine-apples, plums (various), cherries, apricots, raspberries, melons,

currants, and damsons. (In August and September)--Peaches, plums, figs,

filberts, mulberries, cherries, apples, pears, nectarines, and grapes.

(During the latter months)--Pines, melons, strawberries, medlars, and

quinces. (In September)--Morella cherries, damsons, and various plums.

FOURTH QUARTER. October, November, and December.--Meat, as before, and doe

venison.--Poultry and Game: Domestic fowls, as in first quarter; pheasants

(from the 1st of October); partridges, larks, hares, dotterels (at the end

of the month), wild-ducks, teal, snipes, widgeon, and grouse.--Fish:

Dories, smelts, pike, perch, halibuts, brills, carp, salmon-trout, barbel,

gudgeons, tench, and shellfish.--Vegetables: (As in January),

French-beans, last crops of beans, &c.--Fruit: Peaches, pears, figs,

bullace, grapes, apples, medlars, damsons, filberts, walnuts, nuts,

quinces, services, and medlars. (In November)--Meat, &c.: Beef, mutton,

veal, pork, house-lamb, doe venison, and poultry and game as in the last

month.--Fish: As the last month.--Vegetables: Carrots, turnips, parsnips,

potatoes, skirrets, scorzonera, onions, leeks, shalots, cabbage, savoys,

colewort, spinach, chardbeats, chardoons, cresses, endive, celery,

lettuces, salad-herbs, and various pot-herbs.--Fruit: Pears, apples, nuts,

walnuts, bullace, chestnuts, medlars, and grapes. (In December)--Meat,

&c.: Beef, mutton, veal, house-lamb, pork, and venison.--Poultry and Game:

Geese, turkeys, pullets, pigeons, capons, fowls, chickens, rabbits, hares,

snipes, woodcocks, larks, pheasants, partridges, sea-fowls, guinea-fowls,

wild ducks, teal, widgeon, dotterels, dun-birds, and grouse.--Fish: Cod,

turbot, halibuts, soles, gurnets, sturgeon, carp, gudgeons, codlings,

eels, dories, and shell-fish.--Vegetables: As in last month. Asparagus,

&c., forced.--Fruit: As before, except bullace.

=Food, Inspection of.= The Public Health Act enacts that--

"Any medical officer of health or inspector of nuisances may at all

_reasonable times_, inspect and examine any animal, carcase, meat,

poultry, game, flesh, fish, fruit, vegetables, corn, bread, flour, or milk

exposed for sale, or deposited in any place for the purpose of sale, or of

preparation for sale, and intended for the food of man, the proof that the

same was not exposed or deposited for any such purpose, or was not

intended for the food of man, resting with the party charged; and if any

such animal, carcase, meat, poultry, game, flesh, fish, fruit, vegetables,

corn, bread, flour, or milk, appears to such medical officer or inspector

to be diseased, or unsound, or unwholesome, or unfit for the food of man,

he may seize and carry away the same himself or by an assistant, in order

to have the same dealt with by a justice." (P. H., s. 116.)

"If it appears to the justice that any animal, carcase, meat, poultry,

game, flesh, fish, fruit, vegetables, corn, bread, flour, or milk so

seized is diseased, or unsound, or unwholesome, or unfit for the food of

man, he shall condemn the same and order it to be destroyed, or so

disposed of, as to prevent it from being exposed for sale, or used for

such food; and the person to whom the same belongs or did belong at the

time of sale, or of exposure for sale, or in whose possession, or on whose

premises the same was found, shall be liable to a penalty not exceeding

£20 for every animal, carcase, or fish, or piece of meat, flesh, or fish,

or any poultry or game, or for the parcel of fruit, vegetables, corn,

bread, or flour, or for the milk so condemned, or at the discretion of the

justice, without the infliction of a fine, to imprisonment for a term of

not more than _three months_.

"The justice who, under this section, is empowered to convict the

offender, may be either the justice who may have ordered the article to be

disposed of or destroyed, or any other justice having jurisdiction in the

place." (P. H., s. 117.)

"Any person who in any manner prevents any medical officer of health or

inspector of nuisances from entering any premises and inspecting any

animal, carcase, meat, poultry, game, flesh, fish, fruit, vegetables,

corn, bread, flour, or milk exposed or deposited for the purpose of sale,

or of preparation for sale, and intended for the food of man, or who

obstructs or impedes any such officer or inspector, or his assistant, when

carrying into execution the provisions of this Act, shall be liable to a

penalty, not exceeding £5." (P. H., s. 118.)

"Any complaint made on oath, by a medical officer of health, or by an

inspector, or other officer of a local authority, any justice may grant a

warrant to any such officer, to enter any building, or part of a building

in which any such officer has reason for believing that there is kept or

concealed any animal, carcase, meat, poultry, game, flesh, fish, fruit,

vegetables, corn, bread, flour, or milk which is intended for sale for the

food of man, and is diseased, unsound or unwholesome, or unfit for the

food of man and to search for, seize, and carry away any such animal, or

other article, in order to have the same dealt with by a justice under the

provisions of this Act.

Any person who obstructs any such officer in the performance of his duty,

under such warrant shall, in addition to any other punishment to which he

may be subject, be liable to a penalty not exceeding £20." (P. H., s.

119.)

=FOOL.= Cooks give this name to a species of jam made of boiled and

crushed fruit, mixed with milk or cream, and sweetened.

=Fool, Ap'ple.= From the peeled and cored fruit, placed in a jar, with

moist sugar, q. s. to render it palatable, and a very little cider or

perry; the jar is set in a saucepan of water over the fire, and the heat

continued until the apples become quite soft, when they are pulped through

a colander, and a sufficient quantity of milk, a little cream, and some

sugar, added to bring them to the proper 'palate.'

=Fool, Goose'berry.= From gooseberries, as the last. Those which are

unripe are generally preferred. These preparations, when nicely made, are

very pleasant and wholesome.

=FOOT (Human).= See FEET.

=FOOTS.= Coarse moist sugar. The scrapings of the sugar hogsheads, refuse

sugar, waste, and dirt, is also sold to the publicans under this name, who

use it in the adulteration of their beer; chiefly to make it stand more

water, and to impart 'briskness.'

=FORCE'MEAT.= _Syn._ FARCE, STUFFING. A species of sausage meat, either

served up alone, or employed as an ingredient in other dishes.

Mrs Rundell truly remarks that "at many tables, where everything else is

done well, it is common to find very bad forcemeat or stuffing." To avoid

this error, care should be taken to so proportion the ingredients that "no

one flavour should predominate; yet if several dishes be served the same

day, there should be a marked variety in the tastes of the forcemeats as

well as of the gravies. A general fault is, that the tastes of lemon peel

and thyme overcome all others; therefore they should only be used in small

quantities." Forcemeats should be just consistent enough to cut with a

knife, but not dry and heavy. Herbs are very essential ingredients; and it

is the copious and judicious use of them that chiefly gives the cookery of

the French its superior flavour. "To force fowls, meat, &c., is to stuff

them." (Mrs Rundell.)

=FOR'CING.= Horticulturists apply this term to the art of accelerating the

growth of plants, so as to obtain fruits or flowers at unusual seasons.

Dung-beds, bark-beds, and frames, pits, and houses, with glass roofs, are

commonly employed by the gardeners for this purpose.

=FORGERIES, PROTECTION FROM.= See PAPER, PROTECTIVE.

=FORMATE.= _Syn._ FORMIATE. Salts, in which one atom of hydrogen in formic

acid is replaced by a metal or other basic radical. They are best obtained

either by direct saturation of the acid, or by double decomposition; most

of them are very soluble, and are decomposed by hot oil of vitriol.

Formate of ammonium crystallises in square prisms; formate of sodium, in

rhombic prisms; formate of potassium is deliquescent, and crystallises

with difficulty; the formates of barium, calcium, magnesium, and

strontium, form small prismatic crystals; formate of lead assumes the

shape of small colourless needles, soluble in 40 parts of water; the

formates of cobalt, iron, manganese, nickel, and zinc, are easily

crystallisable, whilst that of copper forms very beautiful, large,

bright-blue rhombic prisms; formate of silver is less soluble than the

salt of lead, and is decomposed at a gentle heat.

=FORMIC ACID.= HCHO_{2}. _Syn._ HYDROGEN FORMIATE. An organic acid,

obtained by oxidizing many organic substances, and found in the red ant.

_Prep._ Sugar, 1 part; water, 2 parts; binoxide of manganese, 3 parts; mix

in a retort capable of holding fully 10 times the bulk of the ingredients,

and add, cautiously, oil of vitriol, 3 parts, diluted with an equal weight

of water; as soon as the first violent effervescence has subsided, heat

may be applied, and the product collected and purified, as below.

Formate of lead in fine powder is introduced into a long glass tube, one

end of which is connected with an apparatus evolving sulphuretted

hydrogen, and the other with a receiver. As soon as the salt is entirely

decomposed (blackened) a very gentle heat is applied, and the distilled

liquid collected; the product is, lastly, boiled for a minute or less, to

expel any adhering sulphuretted gas. This furnishes chemically pure formic

acid.

From wood spirit, 1 part; bichromate of potassium and sulphuric acid, of

each 3 parts; the sulphuric acid, diluted with an equal weight of water,

being gradually added last. A portion of wood spirit distils over with the

acid, and may be again treated with bichromate of potassium and sulphuric

acid, when a fresh portion of formic acid will be produced. This process

yields a large product.

_Prop., purific., &c._ The products of the above processes are limpid and

colourless; the stronger ones fume slightly in the air, and possess an

extremely penetrating odour. The acid obtained by the second process boils

at 209° Fahr., crystallises in brilliant scales below 32°, and has the sp.

gr. 1·2353. Its vapour is inflammable, and burns with a blue flame. It is

extremely corrosive, and rapidly destroys the texture of living organic

substances. The products of the other processes are very dilute, and

possess the above properties in only a minor degree. They may all be

purified and concentrated by saturating them with pure carbonate of sodium

or of potassium, and after subjecting the liquid to a gentle heat for a

short time, and liberating the formic acid from the salt by means of

dilute sulphuric acid, finally submitting the mixture to distillation,

when the hydrated acid will come over perfectly pure.

Formic acid reduces the salts of mercury and silver, and forms salts with

the bases termed formiates.

Formic acid is readily distinguished from acetic acid, which in many

points it resembles, by heating it with a little solution of oxide of

silver or mercury; the metal is reduced, and precipitated in a pulverulent

state, while carbonic acid is extricated. The odours of the two acids also

vary.

=FORMICA.= _Syn._ THE ANT. The following are the principal species of the

genus _Formica_. _F. flava_, the yellow ant. Many careful observers say

this species keeps in its nest the _Aphis radicans_, which when its

abdomen is touched by the ant, excretes a saccharine substance on which

the ants feed. _F. rufa_, or large red ant, _F. fusca_; or brown ant,

_Polyergus rufescens_, and _F. sanguinea_. These two latter are sometimes

called amazon ants, from their pugilistic propensities. They have been

known to make regular raids against other species of ants, and to carry

off their larvæ and pupæ to their own nests, where they rear the insects

that come of them, and afterwards employ them as slaves, causing them to

excavate passages, to collect food, to carry larvæ and (so dependent do

the masters become on the exertions of their bondsman) even to feed them;

it being a well-attested fact that the slave holders would starve if left

to themselves. See ANT.

=FORMOBENZOIC ACID.= (HC_{7}H_{6}O,CHO_{2}). _Syn._ FORMIATE OF HYDRIDE OF

BENZOYLE. MANDELIC ACID. When the distilled water of bitter almonds

(containing hydrocyanic acid and the essential oil) is boiled with

hydrochloric acid, a curious reaction occurs; the hydrocyanic acid is

decomposed--into ammonia which unites with the hydrochloric acid, and

formic acid which enters into combination with the oil of

almonds--producing a new body possessed of acid properties, and termed

_Formobenzoic acid_. On evaporating the solution the acid may be obtained

in mixture with ammonia hydrochlorate, from which it may be separated by

ether; the ethereal solution deposits it in rhomboidal tables. It has a

sour taste and is easily soluble in alcohol. When heated it fuses at a low

temperature, emitting an agreeable odour of hawthorn blossoms. (Miller.)

=FORM'ULA.= [L.] In _pharmacy_ and _medicine_, a short form of

prescription; a recipe. By chemists the term is applied to a grouping of

symbols, expressing the composition of a body; thus, HCl (standing for 1

atom of hydrogen united to 1 atom of chlorine) is the formula for

hydrochloric acid. A chemical formula is termed empirical when it merely

gives the simplest possible expression of the composition of the substance

to which it refers. A rational formula, on the contrary, aims at

describing the exact composition of molecule, or combining weight of the

substance, but stating the absolute number of atoms of such of the

elements essential to that object, as well as the mere relations existing

between them. The empirical formula is at once deduced from the analysis

of the substance, reckoned to 100 parts; the rational formula requires, in

addition, a knowledge of its combining quantity, which can only be

obtained by direct experiment, by synthesis, or by the careful examination

of one or more of its most definite compounds. Thus, the composition of

acetic acid is expressed by the formula CH_{2}O, which exhibits the

simplest relations of the three elements; if we want to express the

quantities of these, in atoms required to make up one molecule of acetic

acid, we have to adopt the formula C_{2}H_{4}O_{2} or HC_{2}H_{3}O_{2}.

=FOR'MYL.= _Syn._ FORMYLE. A hypothetical organic radical, having the

composition C_{2}H. Its existence was inferred from the constitution of

certain organic compounds which are now referred to the methyl-series.

Formic acid was supposed to be an oxide of formyl; and chloroform, the

terchloride of formyl.

=FOXGLOVE.= _Syn._ DIGITALIS (B. P.), L. A genus of plants belonging to

the natural order _Scrophulariacæ_. The leaves of the uncultivated

'_Digitalis purpurea_,' or purple foxglove, are officinal in our

pharmacop[oe]ias. They must be gathered before the terminal flowers have

expanded. "The petiole and midrib of the leaf being cut off, dry the

lamina." (Phar. L.) The seeds (DIGITALIS SEMINA), which were ordered, as

well as the leaves, in former pharmacop[oe]ias, are said to be in many

points preferable to them. When good, the leaves are of a dull-green

colour, and possess a feeble narcotic odour, and a bitter, unpleasant

taste. Both the dried leaves and the powder should be preserved in corked

bottles covered with dark-coloured paper, or in well-closed tin canisters,

and kept in a dark cupboard; and the stock should be renewed yearly, as

age considerably diminishes the medicinal activity of digitalis.

_Action, uses, &c._ Foxglove is diuretic, sedative, and antispasmodic, and

exerts a specific action over the cerebro-spinal system, promoting the

functions of the absorbents, and reducing the force of the circulation in

a remarkable manner. It is administered in fevers and inflammations, to

reduce the frequency of the pulse, and to allay excessive vascular

excitement; in dropsy (unless the habit is full and pulse tight and

cordy), as a diuretic, either alone, or combined with squills, calomel,

salines, or bitters; in internal hæmorrhages, as a sedative, when the

pulse is full, hard, and throbbing; in diseases of the heart and great

vessels, and in phthisis, to reduce the force and velocity of the

circulation; in epilepsy and insanity, to repress vascular excitement; and

in spasmodic asthma, scrofula, and several other diseases, with one or

other of the above intentions.

The greatest caution is required in the use of foxglove, as its effects

accumulate in the system, and the unwary practitioner is occasionally

surprised at the sudden demise of his patient, even after he has left off

the use of this drug.--_Dose_, 1/2 gr. to 1-1/2 gr., in powder, every 6

hours. See EXTRACT, INFUSION, TINCTURE, &c.

=FOX'ING.= See MALT LIQUORS.

=FRACT'URE.= _Syn._ FRACTURA, L. The breaking or disrupture of a bone.

When the bone is nearly divided into two parts, it is called a SIMPLE

FRACTURE; when the integuments are also lacerated, a COMPOUND FRACTURE;

and when the bone is splintered, a COMMINUTED FRACTURE.

=FRAGRANT PAIN-CURER= (Five-minute). Dr Walter Scott, New York. A remedy

to remove all kinds of pain in five minutes. A clear colourless fluid

containing ether, 6 grammes; glycerin, 21 grammes; common salt, 3·4

grammes; distilled water, 170 grammes. (Hager.)

=FRANK'INCENSE.= _Syn._ COMMON FRANKINCENSE; THUS (Ph. L.), L. The

turpentine which exudes from the bark of _Abies excelsa_ (Norway spruce

fir) and _Pinus palustris_ (pitch or swamp pine), hardened by the air.

(Ph. L.) The gum-resin olibanum, which is the produce of the _Boswellia

thurifera_, is the 'odorous frankincense' of commerce.

=Prepared Frankincense.= _Syn._ THUS PRÆPARATUM (Ph. L.), L. _Prep._ (Ph.

L.) Frankincense, 1 lb.; water, q. s. to cover it; boil until the resin is

melted, and strain through a hair sieve; when the whole has cooled, pour

off the water, and keep the frankincense for use. Resembles common resin

in its general properties.

=FRAX'ININ.= _Syn._ FRAXIN; FRAXINA, L. A peculiar bitter, neutral, and

crystallisable substance, soluble in boiling water, extracted from the

bark of _Fraxinus excelsior_, or common ash. It is febrifuge.

=FREC'KLES.= These are round or oval-shaped yellowish spots, similar to

stains, developed on the skin. There are two varieties--FRECKLES, or

SUMMER FRECKLES, resulting from the action of the sun and heat during the

summer season, and disappearing with the hot weather or exposure;

and--COLD FRECKLES, which occur at all times of the year. The former are

chiefly confined to persons of fair complexion, whilst the latter attack

persons of all complexions indifferently, and sometimes assume a lively

yellow or greenish colour.

_Treatment._ Common freckles may generally be removed by the frequent

application of dilute spirits, acids or alkaline solutions; the last two

just strong enough to prick the tongue. Cold freckles commonly occur from

disordered health, or some general disturbance of the system, to which

attention should be chiefly directed. In both varieties the solution of

bichloride of mercury (Ph. L.), or Gowland's lotion, will be found a most

useful external application. See _below_.

=Freckles, Lotion for.= _Prep._ 1. Bichloride of mercury, 5 gr.;

hydrochloric acid, 30 drops; lump sugar, 1 oz.; rectified spirit of wine,

2 oz.; rose water, 7 oz.; agitate together until the whole is dissolved.

2. Petals or leaves of red roses, 1 oz.; hot water, 12 fl. oz.; infuse an

hour, and strain, with expression, 1/2 pint; add of citric acid, 30 gr.;

dissolve, and in a few hours, decant and clear.

3. Rose leaves (dried), 1/4 oz.; lemon juice (freshly expressed) and rum

or brandy, of each 1/4 pint; digest 24 hours, and squeeze out the liquor

for use.

4. (Kittoe's.) Sal ammoniac, 1 dr.; spring water, 1 pint; lavender water

or eau de Cologne, 1/4 oz; mix. The above are applied with the fingers

night and morning, or oftener.

=Freckles, Pomade for.= _Prep._ 1. Citrine ointment, 1 dr.; simple

ointment, 7 dr.; otto of roses, 3 drops.

2. Elder flower ointment, 1 oz.; sulphate of zinc (levigated), 20 gr.; mix

by porphyrization, or by trituration in a wedgwood-ware mortar. Both the

above, applied night and morning, are excellent for either cold or summer

freckles.

=FREEZ'ING MIXTURES.= See ICE and REFRIGERATION.

FRENCH BER'RIES. _Syn._ PERSIAN BERRIES, AVIGNON B.; GRAINES D'AVIGNON,

Fr. The unripe berries or fruit of the _Rhamnus infectorius_. They are

imported from France and Persia; those from the latter country being

esteemed the best. Some writers state that the Persian berries are the

product of a distinct species, namely, _R. amygdalinus_. They are chiefly

used for dyeing morocco leather yellow. Their decoction dyes cloth,

previously mordanted with alum, tartar, or protochloride of tin, of a

yellow colour; with sulphate of copper, an olive; and with red sulphate of

iron, an olive-green colour.

=FRENCH POL'ISH.= Several varnishes are used under this name. That most

generally employed is a simple solution of pale shell-lac in either

methylated spirit or wood naphtha. Sometimes a little mastic, sandarac, or

elemi, or copal varnish, is added to render the polish tougher.

_Prep._ 1. From pale shell-lac, 5-1/2 oz.; finest wood naphtha, 1 pint;

dissolve.

2. Pale shell-lac, 3 lbs.; wood naphtha, 1 gall. Methylated spirit (68 o.

p.) may be substituted for the naphtha in each of the above formulæ.

Cooley's Cyclopædia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I · 第 367 / 428 题