The Essentials of Materia Medica and TherapeuticsLongmans, 1885 - 545 páginas |
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Palavras e frases frequentes
acetic acid Acidum action acts Adulteration alkaline alkaloid aloes ammonia ammonium aromatic astringent atropine bark belladonna bitter boiling calcium carbonic acid cause cent chloride of barium chloroform chronic cinchona colour colourless Comp Composita compound contains crystallised dilute disease dissolved distilled water diuretic dried drug effect employed ether evaporation externally extract Extractum filter fluid drachm fluid ounces gallic acid glycerine grain-measures grains half heat hydrochloric acid insoluble iodide iodine ipecacuanha iron irritation large doses liquid Liquor medicines mercury mixed morphine mucilage mucous membrane neutralisation nitrate of silver nitric acid odour ointment opium oxide perchloride pill pint potash potassium powder precipitate Prep Prepared by maceration produce proof spirit Prop purgative quinine rectified spirit resin salt scammony skin soda sodium soluble in water starch stimulant stomach substances sugar sulphate sulphuric acid tannic acid taste Therapeutics tincture tonic Unguentum urine volatile oil volumetric solution yellow zinc
Passagens conhecidas
Página 500 - Potash into the 10,000 grain flask and, having half filled the flask with water, allow the salt to dissolve ; then dilute the solution with more water, until it has the exact bulk of 10,000 grain-measures.
Página 294 - ... of water ; shake them well together, and when the acid liquid has separated this may be drawn off, and the process repeated with distilled water slightly acidulated with hydrochloric acid, until the whole of the alkaloids have been removed. The acid liquid thus obtained will contain the alkaloids as hydrochlorates, with excess of hydrochloric acid.
Página 201 - ... ether added slowly and in portions. Now let the filter dry in the air, and pour upon it the liquid in the bottle in portions, in such a way as to transfer the greater portion of the crystals to the filter.
Página 124 - Loses about sixteen per cent, of its weight when exposed to a red heat. When supersaturated with nitric acid, and evaporated to dryness, the residue is almost entirely soluble in water, only a little, silica remaining undissolved ; and the solution is precipitated only faintly by chloride of barium and nitrate of silver.
Página 496 - ... of grammes and cubic centimetres were employed. The following apparatus is required in the preparation and use of these solutions. For British weights and measures : — 1. A flask which, when filled to a mark on the neck, contains exactly 10,000 grains of distilled water at 60°.
Página 495 - ... being the volume of a grain of Distilled Water. According to the metrical system, the quantities of the substances to be tested are expressed in grammes by weight, whilst the quantities of the test solutions employed in testing are expressed in cubic centimetres,— the cubic centimetre being the volume of a gramme of Distilled Water. As the cubic centimetre bears the same relation to the gramme that the grainmeasure bears to the grain, the one system may be substituted for the other with no...
Página 295 - To the mother-liquor from the preceding process add solution of ammonia in slight excess. Collect, wash, and dry the precipitate, which will contain the other alkaloids. The weight of this precipitate divided by 2, and added to the percentage weight of the quinine and cinchonidine, gives the percentage of total alkaloids.
Página 200 - ... cc of distilled water, and stir occasionally during half an hour. Filter the mixture through a plaited filter about 10 cm.
Página 65 - ... and then diluted with six fluid ounces of distilled water to which a little mucilage of starch has been added, does not give with the volumetric solution of iodine a permanent blue colour, until 808 grain-measures have been added; corresponding to 4 grains of arsenious acid in one fluid ounce.
Página 126 - ... readily soluble in acetic acid. Its solution, acidulated with hydrochloric acid, gives a yellow precipitate with perchloride of platinum (presence of potassium).