96 LOCUST-TREE — LOGWOOD — LOOSESTRIFE. 



of powdered herb in i pint of boiling water may be 

 taken in doses of £-1 wineglassful. 



Preparations — Powdered herb : Dose, 5-60 grains. 

 Fluid extract : Dose, 10-20 drops. Acid tincture : Dose, 

 1-4 drachms. Tincture: Dose, 1-4 drachms. Ethereal 

 tincture, B.P. : Dose, 5-15 drops. Syrup: Dose, 1-4 

 drachms. Oil of seed: Dose, 1 drop rubbed well up with 

 20 grains of sugar, and divided into 6-12 doses. Lobelin : 

 Dose, J-3 grains. 



LOCUST-TREE. Robinia Pseudacacia. 



Synonym — Yellow Locust, Black Locust, False 

 Acacia. 



Part used — Bark, leaves. 



Action — Cathartic, emetic. The flowers form an 

 excellent and agreeable antispasmodic syrup. In doses 

 of 30 grains the leaves act as an emetic. The rootbark 

 acts as a purgative and emetic in large doses, as tonic 

 in smaller ones. The decoction is the usual form of 

 administration. 



LOGWOOD. tiaematoxylon campechimnutn. 



Synonym — Haematoxylon. 



Part used — Wood. 



Action — Astringent. Being less constipating than 

 other astringents, this drug may be used in old 

 diarrhoeas, dysentery, hemorrhages from lungs, uterus 

 and bowels, infantile diarrhoea, &c. The decoction 

 may be freely given in doses of a wineglassful when 

 required, or the solid extract in the form of pills. 



Preparations — Decoction, B.P. 1895: Dose, \-i 

 ounces. Extract solid, B.P. 1885 : Dose, 10-30 grains. 



LOOSESTRIFE. Lyslmachia vulgaris. 



Synonym — Willowherb. 



Part used — Herb. 



Action — Astringent, expectorant. Useful in bleeding 

 of mouth, nose, and wounds. It restrains profuse men- 

 struation. As a gargle it finds use in relaxed throat, &c. 



