314 MATER IA MEDIC A AND THERAPEUTICS. 



it is exhibited in phthisis, but is apt to derange digestion. 

 Empirically, in doses of several drachms, the tincture has 

 been found useful in delirium tremens, but is unquestionably 

 dangerous. Moderate doses are invaluable in the same disease, 

 or in subacute or chronic cases of alcoholism, to stimulate the 

 heart, relieve low sinking feelings, and rouse the appetite. 



4. REMOTE LOCAL ACTION. 



Traces of some of the active principles of digitalis have 

 been detected in the urine. The action of the drug upon the 

 urine, let it be carefully noted, is not due to any direct 

 influence on the cells of the kidney, but to its effect chiefly 

 on the heart and vessels generally, partly on the renal 

 arteries. ^ 



LABIATE. 



Rosmariui Oleum OIL OP ROSEMARY. The 

 oil distilled from the flowering tops of Rosmarinus 

 officinalis. 



Characters. Colourless, with the odour of rosemary, and a 

 warm aromatic taste. 



Composition. Oil of rosemary has the usual composition 

 of its allies, consisting of a terpene, isomeric with turpentine, 

 C 10 H 16 , and a body allied to camphor. 



Dose. 1 to 5 min, 



Preparations. 

 Spiritus Bosmarini. 1 in 50. Dose, 10 to 30 min. 



Oil of Rosemary is also contained in Linimentum Saponis and 

 Tinctura Lavandulse Composita. 



ACTION AND USES. 



Rosemary resembles the other aromatic volatile oils in its 

 action and applications. It is a favourite component of stimu- 

 lating lotions. 



Lavaiidulre Oleum OIL OF LAVENDER. The 

 oil distilled in Britain from the flowers of Lavandula 

 vera, 



Characters. Colourless or pale yellow, with the odour of 

 lavender, and a hot bitter aromatic taste. 



Composition. Oil of lavender is a mixture of a terpene, 

 Cj H l6 , and a substance allied to camphor. 



Impurities. Oils of spike and turpentine. 



Dose. 1 to 5 min. 



