This section is from the book "A Treatise On Therapeutics, And Pharmacology Or Materia Medica Vol2", by George B. Wood. Also available from Amazon: Part 1 and Part 2.
These are characterized by an excitant influence over the general circulation, but more especially by escaping with the urine, and stimulating the whole track of the urinary passages. They are employed much less for their diuretic powers, which are in general feeble or uncertain, than for their excitant and alterative action directly on the mucous membrane lining these passages, and sympathetically on the parts in their immediate neighbourhood.