There are several species of the poplar tree that grow common in the country. One kind is called the white poplar, and another the stinking poplar. The barks of both these kinds are good for medicine ; but the latter is the best, being the most bitter. It has tags hanging on the limbs, which remain on till it leaves out, which is about a week later than the other kind. It has short brittle twigs, which are extremely bitter to the taste. The inner bark given as a tea is one of the best articles to regulate the bile and restore the digestive powers of anything I have ever used. The bark may be taken from the body of the tree, the limbs or the roots, and the outside shaved off. Preserve the inner bark, which should be dried and carefully preserved for use. To make the bitters No. 4, it should be pounded or ground fine, and mixed with the other articles, or it may be used alone for the same purpose. To make a tea, take a handful of the bark, pounded or cut into small strips, and put into a quart mug, and fill it with boiling water. This, if taken freely, will relax the system, will relieve headache, faintness at the stomach, and many other complaints caused by bad digestion. It is good for obstructions of the urine, and weakness in the loins; and those of a consumptive habit will find great relief in using this tea freely.
In chronic diarrhoea, chronic dysentery, cholera infantum, it is a tonic, not an astringent.
It is of much use in kidney and bladder trouble. It gradually increases the urine and relieves the aching back. If given with Uvaursi, it will give good results in cystic and renal catarrh and in congestions.
It is also indicated in uterine, vaginal and anal weakness, and can be used as a wash or internally. Is good as a wash in skin diseases and sores caused by gonorrhoea or syphilis. The dose of the Tincture is from 30 to 60 minims.