= Solution
\b[The seven named <mixtures> of the 1864 <British Pharmacopoeia> are <Mistura Ammoniaci>, <Mistura Amygdalae>, <Mistura Creasoti>, <Mistura Cretae>, <Mistura Ferri Composita>, <Mistura Guaiaci> and <Mistura Scammonii>.] Their compositions are as follows; <avoirdupois ounces> are used for solids and <fluid ounces> for liquids.
* <Mistura Ammoniaci>: <ammoniacum> ¼ <avoirdupois ounce>, <distilled water> 8 <fluid ounces>, rubbed together and strained. Its own <gum> helps disperse its <resin>; <ammoniacum> is not <Ammonia>. <The Essentials of Materia Medica and Therapeutics by Alfred Baring Garrod (1865)>[Umbelliferae, part 2, Ammoniacum]{ref}
* <Mistura Amygdalae>: compound almond powder 2½ <avoirdupois ounces>, <distilled water> 1 <Imperial pint>. The compound powder is made from sweet <almonds> 8 parts, <sugar> 4 parts and <gum arabic> 1 part by <mass>. Trituration produces an <emulsion>. <The Essentials of Materia Medica and Therapeutics by Alfred Baring Garrod (1865)>[Rosaceae, continued, almond preparations]{ref}
* <Mistura Creasoti>: <creosote> 16 <minims>, <glacial acetic acid> 16 <minims>, <Spiritus Juniperi> ½ <fluid drachm>, <syrup> 1 <fluid ounce>, <distilled water> 15 <fluid ounces>. Here the spirit has the particularly strong 1864 <juniper oil> content. <The Essentials of Materia Medica and Therapeutics by Alfred Baring Garrod (1865)>[Hydrocarbons from the destruction of wood by fire, Mistura Creosoti]{ref}
* <Mistura Cretae>: prepared <chalk> and powdered <gum arabic>, ¼ <avoirdupois ounce> each; <syrup> ½ <fluid ounce>; <cinnamon water> 7½ <fluid ounces>. The <chalk> is suspended, not dissolved. <The Essentials of Materia Medica and Therapeutics by Alfred Baring Garrod (1865)>[Calcis Carbonas Praecipitata, Creta Praeparata, British mixture]{ref}
* <Mistura Ferri Composita>: powdered <myrrh> 60 <grains>, <potassium carbonate> 25 <grains>, <rose water> 8 <fluid ounces>, <ferrous sulfate> 30 <grains>, <Spiritus Myristicae> 1 <fluid drachm>, <sugar> 60 <grains>. Triturate the <myrrh> with the spirit and <potassium carbonate>, then add the <rose water> with <sugar>, followed by <ferrous sulfate>; keep the resulting preparation stoppered. Formation of <ferrous carbonate> and its subsequent <oxidation> explain why the order and storage matter. <The Essentials of Materia Medica and Therapeutics by Alfred Baring Garrod (1865)>[Ferri Carbonas Saccharata, British Mistura Ferri Composita formula]{ref}
* <Mistura Guaiaci>: powdered <guaiacum resin> ½ <avoirdupois ounce>, <sugar> ½ <avoirdupois ounce>, powdered <gum arabic> ¼ <avoirdupois ounce>, <cinnamon water> 1 <Imperial pint>. The <gum> assists dispersion of the poorly water-soluble <resin>. <The Essentials of Materia Medica and Therapeutics by Alfred Baring Garrod (1865)>[Zygophyllaceae, resin preparations]{ref}
* <Mistura Scammonii>: <scammony resin> 4 <grains> with unskimmed <milk> 2 <fluid ounces>, triturated into a uniform dispersion. <The Essentials of Materia Medica and Therapeutics by Alfred Baring Garrod (1865)>[Convolvulaceae, Scammonium, Mistura Scammonii]{ref}
The category is an official preparation name, not every possible bedside combination of medicines. Camphor water and acacia <mucilage> are not additional entries under \i[Mistura]: the 1864 names are \i[Aqua Camphorae] and \i[Mucilago Acaciae]. <The Prescriber's Analysis of the British Pharmacopoeia by John Birkbeck Nevins (1864)>[pp. 30 and 52–53, mixture names and alterations]{ref}
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