MEDICAL CONTRACTIONS.

O. O. O. Oleum olivse optimum, best olive oil.

O. Alt. Hor. Omnibus alternis horis, every other hour.

Oil. Oleum, oil.

Oz. An ounce.

P. Pulvis, potvder; pilula, pill; pondere, by weight.

P. M. Partes sequales, equal parts.

P. D. Pharmacopoeia Dublinensis.

P. E. Pharmacopoeia Edinensis.

P. L. Pharmacopoeia Londinensis.

P. U. S. Pharmacopoeia of the United States.

Part. ZEqual. Partes aequales, equal parts-

Part. App. Parti affects, to the part affected.

Part. Dolent. Parti dolenti, to the part in pain.

P. R. N. Pro re nata, according as circumstances may require.

P. Rat. .ZEt. Pro ratione ustatis, according to the age of the patient.

Paracent. Abd. Paracentesis abdominis, tapping.

Part. Vic. Partitis vicibus, in divided doses.

Parv. Parvus, small.

Pect. Pectus, the breast.

Per. Op. Emet. Peracta operatione emetici, when the operation of the

emetic is finished.Pil. Pilula, a pill.

Plen. Riv. Pleno rivo, in a full stream.Post Sing. Sed. Liq. Post singulas sedes liquidas, after every loose

stool.Pp., Ppt., or Prep. Praeparata, prepared.Pro Pot. Com. or, Pro Pot. Ord. Pro potu commune, or ordinario,

for a common drink.Prox. Luc. Proxima luce, the next day.Pulv. Pulvis, ponder ; pulveres, powders.Pug. Pugillus, a pinch between the finger and thumb.Q. P. Quantum placet, as much as you please.

Q. Q. H. or Quaq. Quat. Hor. Quaque quatuor bora, every fourth hour.Q. S. Quantum sufficiat, as much as is sufficient.Quadrihor. Quadrihoris, every four hours.Quadrupl. Quadruplicate, ybMr times as much.Quamp. Quamprimum, immediately.Quaq. or Quisq. Quaque, or quisque, every one.Quart. Quartus, fourth.Quinq. Quinque, five.Quor. Quorum, of which.

R. Recipe, take ; but originally it was this sign If., the old invocation toJupiter for his blessing upon the formula.