Observations on the superior efficacy of the red Peruvian bark, in the cure of fevers. Interspersed with occasional remarks on the treatment of other diseases by the same remedy / by William Saunders.

William Saunders

Date:: 1783

Credit: Observations on the superior efficacy of the red Peruvian bark, in the cure of fevers. Interspersed with occasional remarks on the treatment of other diseases by the same remedy / by William Saunders. Source: Wellcome Collection.

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$age] appearance, not unlike the Balfam of Peru, when thickened: the flavour and tafte of the original Tincture were ¢ intirely preferved i in it. The extract from the common Bark had avery different appearance. It feem- ed coarfe and gritty, and by no means fo characteriftic of its original Tin@ture. The quantity of extra& procured from the Red Bark was confiderably greater than from the fame quantity of common Bark ; but, as the refduum of neither was ren-_ dered entirely inert, the abfolute quantity could not be afcertained.* Gis EXP E- -* To ,26.1b.:-0f Red ‘Bark were added gallons of proof fpirit, after remaining together for fome time the Tin@ture was poured off, and fubmitted to a dif- tillation ina water bath, the quantity of {pirituous ex~ tract obtained. was 12 lb, and a half ; a quantity of wa- ter being poured on the refiduum of the Tincture, the watery extract obtained was 4 |b. Tn another experiment with 30 lb. of Red Bark, of an inferior quality, treated in the fame manner as the former, only 11 1b. and a half of {pirituous extract was procured, and 4 1b. and half of watery extract. | The e$