Codex @codex  0

One of the related alkaloids obtained from cinchona bark. Different solubilities allow partial separation during crystallization and extraction.

The dried latex of the opium poppy, containing several alkaloids. Crude preparations must not be treated as interchangeable with a standardized opioid medicine.

The 1864 preparations contain either crude opium or its aqueous Extractum Opii; those quantities must be distinguished from a quantity of isolated morphine. The following are the officinal opium preparations. Ratios for solids mean the mass fraction in the compounded preparation; liquid strengths specify mass per volume or the actual ingredients used.

The arithmetic uses the new avoirdupois ounce of 437.5 grains, not the old apothecaries' ounce of 480 grains. These are historical formulation proportions, not modern assays of morphine delivered after solvent extraction. Confectio Opii was omitted in 1864, and this edition's Vinum Opii contains no spices. The separate morphine hydrochloride preparations—Liquor Morphiae Hydrochloratis, Suppositoria Morphiae, Trochisci Morphiae, and Trochisci Morphiae et Ipecacuanhae—contain an isolated alkaloid salt rather than crude opium. ^[ref]

Pulvis Jalapae Compositus contains powdered jalap 5 avoirdupois ounces, potassium hydrogen tartrate 9 avoirdupois ounces, and powdered ginger 1 avoirdupois ounce. Thus the mass proportions are 5:9:1, and jalap supplies one third of the powder's mass. This is a compound purgative, not pure jalap resin. ^[ref]

Pilula Scillae Composita contains powdered squill 1¼ avoirdupois ounces, powdered ginger, ammoniacum and hard soap 1 avoirdupois ounce each, with treacle 2 avoirdupois ounces, or sufficient to make a pill mass. Using the specified 2 avoirdupois ounces of treacle, the whole is 6¼ avoirdupois ounces and contains one fifth squill by mass. The allowance of sufficient treacle makes consistency a compounding requirement, not a claim that every moist pill batch has an analytically exact 20% squill content. ^[ref]

Liquor Morphiae Hydrochloratis contains morphine hydrochloride 4 grains, dilute hydrochloric acid 8 minims, rectified spirit 2 fluid drachms and distilled water 6 fluid drachms. Its conventional strength is ½ grain of morphine hydrochloride per fluid drachm, not ½ grain of free morphine. The small quantity of hydrochloric acid maintains an acid solution. ^[ref]

Liquor Strychniae contains strychnine 4 grains, dilute hydrochloric acid 6 minims, rectified spirit 2 fluid drachms and distilled water 6 fluid drachms. Dissolve the strychnine in the acid mixed with part of the water, using the prescribed assistance of heat, then add the spirit and remaining water. Its conventional strength is ½ grain of strychnine per fluid drachm. Acid promotes solubility by forming a soluble salt of the alkaloid. ^[ref]

For the last two solutions, the stated historical strengths use the nominal 8 fluid drachms of spirit and water. The extra few minims of dilute acid must still appear in the actual recipe; treating all ingredient volumes as perfectly additive would not give an exact modern analytical concentration.

Retain the original material, examine separate portions for arsenic and digitalin, and require corroboration beyond a single colour or deposit. One is an inorganic element; the other is a historical pharmaceutical preparation of organic cardiac poisons. A procedure suited to one can destroy or lose the other.

Record the receipt, container, quantity and condition of the stomach contents. Preserve a sealed portion unchanged. Mix the remainder sufficiently to obtain representative aliquots, retaining solid particles as well as liquid. Record the portions consumed by each test and retain the resulting preparations. Test the reagents separately and include an unpoisoned comparison material where available. An analyst must distinguish poison originally present from contamination introduced by apparatus, acids or metals.

For arsenic detection, a useful period screen is deposition on clean copper warmed in an acidified portion of the material. A dark coating is only presumptive: other substances, including antimony, can interfere. Wash and dry the coated copper, then heat it in a small glass tube, examining the cooler portion for a sublimate of arsenic trioxide and its characteristic crystals under a microscope. A separately prepared clear extract allows corroborating reactions, such as the yellow arsenic trisulfide precipitate and the appropriate silver reaction. An 1844 primary account already stressed both reagent purity and the danger of confusing arsenic with other metals.^[ref]

A second classical approach converts the suspected arsenic into volatile arsine in a hydrogen-generating apparatus and decomposes it in a heated glass tube, producing a metallic mirror. This separates a volatile product from much of the original organic material. A mirror alone is insufficient, since antimony can give a similar deposit; establish the deposit's identity by further chemistry. The initial blank must include the very zinc and acid used in the examination. The apparatus produces extremely poisonous gas: this is an explanation of historical laboratory evidence, not a procedure for an uncontained demonstration. The original method of James Marsh explains the value of separating the poison in gaseous form; later confirmation must still distinguish arsenic from interfering material.^[ref]

For digitalin, work on a fresh aliquot without mineralizing it. Use an alcoholic extraction, filter away coarse material, concentrate gently, and retain rather than discard fractions until their behaviour has been checked against a reference preparation. “Digitalin” did not denote one uniform pure compound: a contemporary 1864 report distinguished preparations with markedly different solubilities. Accordingly, a negative result after one solvent partition is inconclusive; it would be particularly misleading to assume that the substance must follow the acid–base extraction behaviour of a simple alkaloid.^[ref]

Colour reactions could support the examination of a cleaned extract. Contemporary work described a brown or reddish colour with sulfuric acid, changed to violet by bromine vapour; the hydrochloric-acid green colour was already acknowledged to lack specificity. Compare a reference and a blank under the same conditions. Colour in a dirty stomach extract is not an identification, and tasting an unknown extract is not an acceptable analytical test.^[ref]

A particularly relevant development available before this examination was the physiological test investigated by Charles Hilton Fagge and Thomas Stevenson in 1865. An extracted fraction was compared with known digitalin using the response of a frog's heart. The informative effect was irregular beating followed by arrest with the cardiac ventricle pale and firmly contracted, rather than mere illness or death. Crucially, their experiments also showed that ordinary human stomach contents could injure frogs, and other cardiac poisons could resemble digitalin. A solvent blank, a comparable unpoisoned extract and a reference poison therefore matter. These are historical experiments, not a proposal to repeat animal testing for this solution.^[ref][ref]

The defensible conclusion combines extraction behaviour, chemical reactions, physiological specificity and the clinical circumstances, acknowledging uncertainty if these disagree. A modern laboratory would instead seek specific validated instrumental identification, for example chromatography coupled to mass spectrometry for an identified cardiac glycoside, with reference material and controls. That later capability must not be credited to an 1866 examiner.^[ref]

Opium was chiefly used to relieve pain, procure sleep, suppress troublesome cough and restrain diarrhoea; each effect can relieve suffering while also creating a hazard. It is a mixture of alkaloids, not a single standardized modern drug. Preparations such as laudanum cannot be treated as interchangeable volumes of “a sedative”. Morphine and codeine account for important pharmacological effects, but historical extracts varied.

For pain, the useful objective is relief sufficient for rest and function. A person exhausted by severe pain may sleep after analgesia; that is different from using ever-increasing sedation to suppress an unexplained illness. In an 1866 explanation, opium might therefore accompany treatment of painful inflammatory disease or severe colic. It could palliate suffering even when no curative treatment existed. It did not follow that a quieter person had recovered from pericarditis, obstruction or infection.

For cough, reducing an exhausting, unproductive symptom was the historical aim. But suppressing a protective cough where clearance of secretions or maintenance of breathing is already impaired can be harmful. For diarrhoea, slowing intestinal transit reduces the number of stools; it does not restore lost fluid or eliminate an infectious cause. The modern pharmacological description of opium tincture specifically links its antidiarrhoeal effect to altered intestinal motility and greater absorption of water from intestinal contents.^[ref] Reduced output is therefore not by itself proof that the underlying disease is improving.

Historical uses also extended to spasmodic disorders and states called nervous excitement. These broad categories mixed different causes. A drug producing drowsiness could conceal deterioration, and neither tetanus nor alcohol withdrawal becomes adequately treated merely because the person is less visibly agitated. The contemporary medical debate openly questioned when opium was useful in such different conditions as delirium tremens, dysentery and cholera.^[ref]

Modern correction: use a defined drug for a defined indication, with monitoring of benefit and toxicity. Properly prescribed opioids remain important for selected severe pain and palliation; crude opium is not a general remedy for sleeplessness, agitation or an undiagnosed abdomen. Major hazards include respiratory depression, excessive sedation, nausea, constipation, physical dependence and harmful interactions with other depressant drugs. Extra care is needed with renal or hepatic impairment. Gastrointestinal obstruction, particularly paralytic ileus, and significant respiratory compromise can preclude routine opioid use; the details depend on the drug and clinical setting.^[ref][ref] In sustained palliative treatment, review analgesia and adverse effects and anticipate constipation, rather than waiting for it to become severe.^[ref]

Prepare quinine sulfate by acidic extraction of cinchona bark, alkaline precipitation of the quinine base, conversion into the sulfate, and purification by crystallization. “Quinia” is the historical name for quinine.

The 1867 process starts with one pound of yellow cinchona bark in coarse powder, three fluid ounces of hydrochloric acid, four pints of solution of sodium hydroxide, and sufficient distilled water and diluted sulfuric acid. The hydrochloric acid is diluted with ten pints of distilled water. The bark is first moistened with diluted sulfuric acid, macerated for twenty-four hours with occasional stirring, and then exhausted in a percolator with the diluted hydrochloric acid. The historical endpoint is disappearance of the bitter character of the emerging liquid. This describes the period's test, not an instruction to taste an unidentified medicinal material.^[ref]

The soluble alkaloid salts enter the percolate. Adding solution of sodium hydroxide liberates the much less water-soluble quinine base. After settling, the liquid is decanted and the precipitate collected on a filter and washed with cold distilled water until the washings cease to be coloured. The precipitate is then treated warm with distilled water and diluted sulfuric acid, added gradually to obtain a neutral liquid with nearly all the precipitate dissolved. The hot solution is filtered through paper, the filter washed with distilled water, and the filtrate concentrated until a surface film appears. It is then set aside for crystallization; the crystals are dried on filter paper without applied heat. This is a separation of a naturally occurring alkaloid, not a synthesis of the quinine skeleton.

Writing $B$ for the quinine base, the central changes are:The successive changes in solubility explain the apparatus: a percolator washes soluble salts out of the powder; a filter retains the liberated base; a heated porcelain vessel dissolves the crude base as its sulfate; cooling then recovers the less soluble crystals. Other cinchona alkaloids can accompany the product, which is why appearance and bitterness are insufficient evidence of purity.

The 1867 “Characters and Tests” combine identity and purity checks. They must be read as a group:

The historical quantity and endpoint requirements belong to the 1867 monograph.^[ref] Its formula represents the then-described heptahydrate; the current “Quinine sulfate” instead specifies a dihydrate and modern tests for related cinchona alkaloids. The modern specification explains that distinction; the exam's historical tests remain those listed above.^[ref]

An alkaloid isolated from cinchona bark, historically called quinia. The free base and quinine sulfate have different solubilities.