Partridge-berry vines (Mitchella repens) relieves retention of the urine.
Pennyroyal (Hedeoma pulegioides) is a remedy for the stomach-ache or wind in the bowels.
Yarrow (Achillea millefolium) or Prickly-ash berries (Xanthoxylum) is a remedy for ague.
Of the common household materials, pepper-tea is a convenient irritant for bowel trouble. Mustard poultice is too well known to need comment. A roasted onion is a good poultice for a boil or abscess, and a poultice of tobacco leaves, generally common in any camp, will serve to apply to boils, stings, poisonous bites, etc. Use this latter carefully for it is a powerful poison, and the external application may produce an unpleasant result.
The preparation of these remedies is usually by infusion, which should be prepared from a handful of the leaves, bark or roots, placed in a dish and about a pint of boiling water turned over it, allowed to stand in a warm place to simmer for a time and drank warm generally.
Sweet Fern (Comptonia asplenifolia); Wild Cherry (Prunus Virginiana) bark or fruit; Hardhack or Steeple-bush (Spiraea tomentosa); or Mountain Cranberry (Arctostaphylos uva-ursi) are all remedies for diarrhœa which may be used on occasion. Nearly any astringent is useful in this case, but should be used only when the case refuses to yield to the action of a cathartic.
Poplar bark (Populus tremuloides); Spearmint (Mentha viridis) or almost any kind of mint which may be found in the nearest low land; or Button-bush (Cephalanthus occidentalis) will serve as a febrifuge in case of a severe cold from exposure.
Gold-thread (Coptis trifolia) which is usually common in swamps: or Oak bark (Quercus sp.) are valuable in checking the canker or sore mouth which often comes after a diet of salt meats.
Witch Hazel (Hamamelis virginica) is a common remedy for irritated skin and many other ills, but I have never seen that it did much good other than to lubricate the surface.
Sweet-flag root (Acorus calamus) relieves the pressure of wind in the stomach and bowels, due generally to fermentation. This is a disagreeable condition and I have known obstinate cases to be cured by nibbling a bit of the root occasionally.