This is the common hemlock tree, and grows in all parts of New England. The best medicine is to peel the bark from the young tree, and shave the ross from the outside, and preserve only the inner bark; dry it carefully, and pound or grind the rind to a powder. A tea made by putting boiling water to this bark is a good medicine for canker, and many other complaints. The first of my using hemlock bark as medicine was in 1814. Being in want of something for canker, I tried some of it by chewing, and found it to answer, and made use of it to good advantage. Since then, have made constant use of it, and have always found it a very good medicine, both for canker and other complaints of the bowels and stomach. A tea made of this bark is very good, and may be used freely; it is good to give the emetic and No. 2 in, and may be used for drink in all cases of sickness, especially when going through a course of medicine and steaming. This, with bayberry bark and the lily root, forms No. 3, or what has been commonly called coffee, though many other things may be added, or either of them be used to advantage alone. The boughs, made into a tea, are very good for gravel and other obstructions of the urinary passages, and for rheumatism.
The dose of the Fluid Ext. or Tincture is from 15 to 60 minims. One of the finest preparations made is Pinus Canadensis, made by the Rio Chemical Company of New York City. It is uniform in strength and gives entire satisfaction.