214 M.iTKRIA MEDIC A AND THERAPEUTICS. 



edges ; with pleasant aromatic odour and burning taste. In- 

 in watrr; soluble in alcohol, ether, chloroform, and 

 alkaline fluids. A solution in rectified spirit strikes a clear 

 1)1 a.- colour when applied to the inner surface of a paring of 

 raw potato. 



i resembling Guaiacum Resin : Myrrh, Scammony, 

 ]>i n/oiii, Aloes, Resin, which have no green tinge. 



nosition. The chief constituent of guaiacum wood is 

 the officinal resin, with a crystalline bitter colouring matter, 

 IT. nn, etc. The resin is itself composed of three resins, guaia- 

 ><-id, CigHaoOg, 70 per cent.; guaiac acid, C 6 H 8 O 3 , re- 

 sembling benzoic acid; and guaiaretic acid, C^H^O^ 10 per 



with an indifferent resin. 



J)n'i,>n}>Ktihles. Mineral acids, spirit of nitrous ether. 

 Jtose. 10 to 30 gr. 



Preparations. 



1 . Mistura Guaiaci. Guaiacum Resin, 2; Sugar, 2; Gum 



Acacia, 1 ; Cinnamon water, 80. Dose, ^ to 2 fl.oz. 



2. Tinctura Guaiaci Ammoniata. 1 in 5 of Aromatic Spirit of 



Ammonia. Dose, % to 1 n.dr., with 1 drachm of mucilage 

 r yolk of egg. 



3. Pilula Hydrargyri Subchloridi Composita. 1 in 2. (See 



ruryyruin, page 86.) 



ACTION AND USES. 

 1. IMMEDIATE LOCAL ACTION AND USES. 



^ Intern fili'it. guaiacum is a local stimulant, producing sali- 

 ii'ii, an aerM hot sensation in the throat, warmth in the 

 epigastrium, inn-ease of the movements and secretions of the 

 Btomach and bowels, and reflex stimulation of the heart. In 

 large quantity it is a gastro-intestinal irritant, causing power- 

 ful vomiting and purging, and the attendant disturbances of 



: illy. 



i powder frequently relieves sore throat, if given 



. to he jilaeed on the tongue, and slowly swal- 



>urs. The tincture or non-officinal lozenge is 



lens successful, riummer's pill doubtless owes part of its 



mil'll;. t to the guaiac resin it contains. 



N THE BLOOD, SPECIFIC AND REMOTE LOCAL ACTION 

 AND USES. 



t ion of guaiacum physiologically is still ob- 

 l stimulant effect on 'the circulation already 



