wahoo Shrubby North American tree of the genus Euonymus (E. atropurpureus) having a root bark with cathartic properties. Waldorf salad Diced raw apples, celery, and walnuts mixed with mayonnaise. wen Harmless cyst, usually on the scalp or face, containing the fatty secretion of a sebaceous gland. whortleberry Two deciduous shrubs, Vaccinium myrtillus, of Eurasia, or V. corymbosum, of eastern North America, having edible blackish berries. wontedness Being accustomed. yarrow Plants of the genus Achillea, especially A. millefolium, native to Eurasia. Also called achillea, milfoil. yellow fever (yellow jack) Infectious tropical disease caused by an arbovirus transmitted by mosquitoes of the genera Aedes, especially A. aegypti, and Haemagogus; it causes high fever, jaundice, and gastrointestinal hemorrhaging. yerba reuma A low California undershrub (Frankenia grandifolia). Zingiber Tropical Asiatic and Polynesian perennial plants: ginger. zwieback Sweetened bread baked as a loaf and then sliced and toasted. The following table is copied from page 636. 20 grains equal 1 scruple 3 scruples " 1 dram 8 drams " 1 ounce 12 ounces " 1 pound The pound is the same as the pound Troy. Medicines are bought and sold in quantities by Avoirdupois Weight. 1 grain equals 1 drop or 1 minim 60 grains or drops " 1 teaspoonful 1 teaspoonful " 1 fluid dram 8 drams (or 8 teaspoonfuls) make " 1 fluid ounce 2 tablespoonfuls make " 1 fluid ounce 1/2 fluid ounce is a " tablespoonful 2 fluid ounces is a " wineglassful 4 fluid ounces is a " teacupful 6 fluid ounces is a " coffee cup 16 ounces (dry or solid) is a " pound 20 fluid ounces is a " pint The remaining tables are copied from contemporary (circa 2005) sources Measurement Unit Conversion