Butternut.
_Cortex._
[The Butternut tree is to be found in almost every part of the United
States. The inner bark is the part used in medicine. It yields, by
analysis, a large quantity of soluble matter, principally of the
extractive kind. Water extracts its virtues, and the Extract, which is
the form in which it is employed, has long been known and used in this
country as an excellent Cathartic. To obviate habitual costiveness, it
is one of the best articles that can be used. By the addition of
Calomel, its powers as an active Cathartic may be greatly increased. The
proper season for gathering the bark for medicinal purposes is in the
months of May and June. The dose of the Extract is from 10 to 30
grains.]