Logwood, in chips, 1 oz.; cinnamon bark, bruised, 55 gr.; distilled water, 1 pint.

Boil the logwood in the water for ten minutes in a covered vessel, adding the cinnamon towards the end. Strain the decoction, and pour as much distilled water over the contents of the strainer as will make the strained product measure a pint.

Uses. - It is a useful astringent in diarrhoea, especially in children. Its great disadvantage is the stain which it imparts to clothing. For the diarrhoea of phthisis, decoctum haematoxyli with acidum sulphuricum aromaticum is a good prescription. It is also used in dysentery and in atonic dyspepsia.