14 ARNICA ARRACH ARROWROOT. 



ARNICA. Arnica montana, Limn. 



N.O. Composites. 



Action Stimulant, vulnerary. Largely used as a 

 local application to bruises, swellings, &c. Being an 

 active irritant, care should be exercised in internal 

 employment. Severe and fatal cases of poisoning are 

 on record. 



Preparations Tincture B.P., root : 20-30 minims. 

 Tincture U.S. P., flowers : 10-30 minims. 



Distinctive character Rhizome ^-i inch in dia- 

 meter, 1-2 inches long with rather distant wing, 

 unbranched rootlets below. Transverse fracture show- 

 ing greyish pith and oil cells in the bark. Taste, acrid 

 and bitter. Odour, like that of apples. The flowers have 

 yellow florets, and brownish fruits, with a single row of 

 whitish barbed hairs, and a hairy receptacle. 



ARRACH. Chenopodium olidum, S. Wats. 



N.O. Chenopodiacea. 

 Syn. Stinking Arrach, Goosefoot. 



Action Nervine, emmenagogue. Useful in hysteria 

 of females and as a remedy for menstrual obstructions. 

 The infusion of i ounce in a pint of boiling water is 

 taken three or four times daily in wineglassful doses. 



Preparation Fluid extract: Dose, ^-i drachm. 



Distinctive character Herb with oval, stalked 

 leaves, about ^ inch long, entire at the margins ; having 

 a strong fishy odour and powdery surface. 



ARROWROOT. Maranta arundinacea, Linn. 



N.O. Marantacea. 

 Syn. Bermuda Arrowroot, Maranta. 



Action Demulcent, non-irritating, nutritive. Well 

 suited for infants and convalescents. Two or three 

 teaspoonfuls may be boiled in a pint of water or milk 

 and seasoned to taste, with sugar, lemon juice, fruit 



