=AMERICAN UNIVERSAL BLOOD-PURIFYING HERB TEA= (Dr Kuhr), for women’s diseases, hysteria, nervous debility, epilepsy, stomachic complaints, asthma, hæmorrhoids, gout, rheumatism, worms, and much besides. White horehound, marsh mallow, liquorice wood, and sassafras, of each, 10 parts; anise, coriander and fennel, of each, 5 parts; red poppy petals, 4 parts; lavender flowers, 2 parts; senna, peppermint, millefoil flowers, and valerian root, of each, 1 part. (Kuhr and Selle.) =AM′ETHYST= (-thĭst). _Syn._ PURPLE ROCK-CRYSTAL; AMÉTHYSTE, Fr.; AMETHYS′TUS, L. A beautiful sub-species of quartz or rock crystal, of a violet-blue colour of varying intensity, in great request for cutting into seals, brooches, and other like articles of ornament. It was known and prized in the earliest ages of antiquity. Among the ancients, cups and vases were made out of this mineral; and it was an opinion of the Greeks and Persians, that an amethyst bound on the navel would counteract the effects of wine, and that wine drank out of an amethystine vessel would not intoxicate. See GEMS. =Amethyst.= In _chromation_, _dyeing_, &c., a rich variety of deep violet colour. Hence, AMETHYST′INE (ĭn), &c. =Amethyst, Orient′al.= A rich violet-blue variety of transparent, crystallised corundum. =AM′IANTH= (-e-ănth). _Syn._ AMIANTH′US, AMIAN′TUS, L.; AMIANTE, Fr. The whiter and more delicate varieties of asbestos, particularly those which possess a satiny lustre. =AM′IDIN= (-e-dĭn). [Eng., Fr.] _Syn._ AM′YDINE; AMIDI′NA, L. A substance noticed by Saussure in starch-paste, when long kept. According to Caventou, it is formed at once by the action of boiling water on starch. It forms the interior substance of the starch-grains, and its properties are intermediate between those of starch and gum. It is, indeed, the soluble part of starch, of which a perfect solution can only be obtained by prolonged ebullition in a large quantity of water. =AMID′OGEN.= NH_{2}. Literally, the generator of amides; in _chemistry_, the name given by Kane to an hypothetical body, composed of two atoms of hydrogen and one of nitrogen. It forms AMIDES by combining with other bodies. =Amidogen Ba′ses.= In _chemistry_, ‘amines’ in which only one equiv. of hydrogen is replaced by an organic radical; and hence called PRIMARY MON′AMINES.