This is a dictionary comprising chiefly the Latin abbreviations used in prescriptions written by British medical practitioners. Some of them are old, and a few almost archaic; for example, fist. arm., which denotes a clyster pipe and pig's bladder fitted for the administration of an enema before indiarubber bulb enema syringes were introduced. Such archaic abbreviations do not occupy much space, and they are of interest now and then. When a variety of meanings may be given to one abbreviation, all are brought together, and the reader must judge from the nature of the prescription which is implied.

A., (1) aa, ana, of each ingredient; (2) ab, absque, of or from ; (3) adde, add thou ; (4) ante, before ; (5) alternus, alternate ; (6) aqua, water; (7) artem, secundum artem, according to art; (8) asinae, lac asince, ass's milk.

A.H., alternis horis, every other hour.

A. J., ante jentaculum, fasting, or before breakfast.

A. P., ante prandium, before dinner.

Ab hinc, from this time.

Abdom., abdomen, the abdomen, the belly.

Abs. febr., absente febre, fever being absent.

Acid, hydroc, (1) acidum hydrochloricum ; (2) acidum hydrocyanicum. Aconit., (1) aconitum, the plant;

(2) aconitina, aconitine. Ad 2 vic, ad secundam vicem, vel ad duas vices, for two times. Ad 3tiam vicem, ad tertiam vicem, for three times. Ad alv. exc, ad alvum excitandum, to stimulate the bowels. Ad aur., ad aurem, to the ear. Ad def. animi, ad defectionem animi, to fainting. Ad del. animi, ad deliquium animi, to fainting.

Ad gr. acid., ad gratam aciditatem, to an agreeable acidity.

Ad libit., ad libitum, at pleasure.

Ad neutral., ad neutralisandum, to neutralisation.

Ad recid. praec, ad recidivum praecavendum, to prevent a relapse.

Ad sat., ad saturandum, to saturation.

Add., (1) adde, add thou; (2) addantur, let them be added ;

(3) addendus, to be added ;

(4) addendo, by adding.

Adeps S., adeps suillus, hog's lard.

Adjac., adjacens, adjacent.

Admov., (1) admove, apply; (2) admoveatur, let it be applied ; (3) ad?moveantur, let them be applied.

Ads. febre, adstante febre, while the fever is present.

Adv., adversum, against.

AEg., aeger vel aegra, the patient; aeger sumat, let the patient take.

AEq.y (1) aequalis, equal; (2) aqua-liter, equally ; (3) aequabilis, uniform.

Aggred. febre, aggrediente febre, while the fever is coming on.

Alt., altera, the other or remainder.

Alter, (altern.) horis, alternis horis, every other hour.

Alvo adst., alvo adstricta, when he bowels are confined.

A.M., ante meridiem, before noonday.

Ammon., (I) ammonia; (2) ammoni-acum.

Ante coen., ante coenam, before supper ; a. jentaculum, before breakfast; a. prandium, before dinner.

Applic, (1) applicandus, to be applied ; (2) applicetur, let it be applied; (3) applicentur, let them be applied. Aq., aqua, water. Aq. astr., aqua astricta, frozen water. Aq. bull., aqua bulliens, boiling water. Aq. cal., aqua calida, hot water. Aq. chlor., (1) aqua chloroformi (generally), chloroform water ;

(2) aqua chlori (rarely), chlorine water. Aq. com., aqua communis, common water. Aq. dest., aqua destillata, distilled water. Aq. ferv., aqua fervens, warm, or hot, water. Aq. fluv., aqua fluviatilis, river water. Aq. font., aquafontana, velfontis, velfontalis, spring water. (Has been misread, aquafortis.) Aq. gel., aqua gelida, cold water. Aq. mar., aqua marina, sea water. Aq. niv., aqua nivalis, snow water. Aq. pluv., aqua pluviatilis, seu pluvialis, rain water. Aq. pur., aqua pura, natural pure water. Aur., auris, the ear; auri dextra vel Iaevae, to right or left ear ; ad aurem, to the ear; p. aur., pone aurem, behind the ear. Aur. prim., aurora prima, early in the morning. B., (1) balsamum, a balsam ; (2) balneum, a bath ; (3) bene, well;

(4) bis, twice ; (5) bolus, bolus, a large pill; (6) bovis (lac b., lac bovis, cow's milk); (7) brachium, the arm (mitt. sang, b., mittatur sanguis brachio, let blood be taken from the arm); (8) bulliens, boiling.

Bb., bbds., barbadensis, Barba-does.

B.M., balneum marinum, seu maris, a sea or salt water bath.

B.P., B.Ph., British Pharmacopoeia.

B.P.C., British Pharmaceutical Conference or British Pharmaceutical Codex.

B.T., balneum tepidum, a warm bath.

B.V., balneum vaporis, vaporosum, a vapour bath.

Bals., balsamum, balsam.

Bib., bibe, drink thou.

Bic, bicarbonas, bicarbonate.

Bis d., bis die ; bis d.d., bis de die, twice a day.

Bis ind., bis indies, twice a day.

Bo v., (1) bovis, of an ox ; (2) bo-villus, (3) bovinus, pertaining to an ox or cow.

Brach., brachium, the arm.

Bull., (1) bulliens, boiling; (2) bulliat or bulliant, let boil.

But., butyrum, butter.

C. (1) lac c., lac capellae, lac caprce, goat's milk ; (2) c. radat., caput radatur, let the head be shaved ;

(3) P.c post coenam, after supper, pondus civile, avoirdupois weight;

(4) colatus, strained ; (5) coletur, let it be strained ; (6) compo-situs, compound; (7) concisus, cut; (8) confectio, a confection ; (9) congius, a gallon ; (10) conserva, a conserve; (11) continue, continue thou; (12) contritus, bruised, broken small;

(13) contusus, bruised, pounded ;

(14) cortex, bark ;(15) cras, cras-tinus, of to-morrow; (16) crys-tallis, in crystals ; (17) cujus, of which ; (18) cum, with ; (19) cyathus, a glass, pot, or cup.

C.C., (1) cucurbilula cruenta, a cupping-glass with a scarificator ;

(2) cornu cervi, hartshorn. C.C.U., cornu cervi ustum, burnt hartshorn. C. M. S., cras mane sumendus, to be taken to-morrow morning. C.N., cras nocte, to-morrow night. C. V., cras vespere, to-morrow evening. C. vin., cyathus vinarius vel vinosus, a wineglass. Caerul., caeruleus, blue. Cal., calidus, warm. Cal., calom., calomelas, calomel. Cal. chlor., (1) calcii chloridum, calcium chloride ; (2) calx chlorinata, chlorinated lime. Cap., capiat, let (the patient) take. Caput r., caput radatur, let the head be shaved. Chart., charta vel chartula, a paper (a powder in paper). Co., compositus, compound. Coch., cochleare, spoonful. Coch. ampl., cochleare amplum, a large (table) spoonful; about 4 fl. drachms. Coch. inf., cochleare infantis, a child's spoonful, about 1 fl. drachm. Coch. mag., cochleare magnum, a large or table spoonful, about 4 fluid drachms. Coch. med. vel mod., cochleare medium vel modicum, a middling (dessert) spoonful, about 2 fl. drachms. Coch. min. z^/parv., cochleare minimum vel parvum, a small (tea) spoonful; about 1 fl. drachm. Cochleat., cochleatim, by spoonfuls. Cod. med., Codex Medicamentarius, French Codex or Pharmacopoeia. Col., (1) cola, strain ; (2) colatus, strained. Colat., (1) colatus, strained; (2) colaturce, to the strained liquor.

Colet., coletur, let it be strained. Colent., colentur, let them be strained. Coll.,(1) collutorium,a mouth-wash;