[1222] Χαλβάνη—Theophr. Hist. Plant. ix. c. 1.
[1223] Vincent, Commerce of the Ancients, ii. (1807) 692.
[1224] Doliet d’Arcq, Comptes de l’Argenterie des Rois de France (1851) 236.—The prices must be multiplied by 3 to give a notion of present value.
[1225] Pasi, Tariffa de Pesi e Misure, Venet. 1521. 204 (1st edition, 1503).
[1226] Fontanon, Edicts et Ordonnances des Rois de France, ii. (1585) 388.
[1227] This property of Umbelliferone may be beautifully shown by dipping some bibulous paper into water which has stood for an hour or two on lumps of galbanum, and drying it. A strip of this paper placed in a test tube of water with a drop of ammonia, will give a superb blue solution, instantly losing its colour on the addition of a drop of hydrochloric acid.
[1228] We have found it best to mix the galbanum-resin with coarsely powdered pumice-stone; the oil is then easily and abundantly obtainable.
[1229] Fig. in Bentley and Trimen, Medic. Plants, part 33 (1878).
[1230] Fraser, Journey into Khorasān, 1825. 118; Polak, Persien, das Land und seine Leute, ii. (1865) 282.
[1231] Fig. in Bentley and Trimen, part 4.