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

From                 Multiply by     To get
inches                  25.4       millimeters
inches                   2.54      centimeters
feet                    30.48      centimeters
yards                    0.91      meters
miles                    1.61      kilometers
teaspoons                4.93      milliliters
tablespoons             14.79      milliliters
fluid ounces            29.57      milliliters
cups                     0.24      liters
pints                    0.47      liters
quarts                   0.95      liters
gallons                  3.79      liters
cubic feet               0.028     cubic meters
cubic yards              0.76      cubic meters
ounces                  28.35      grams
pounds                   0.45      kilograms
short tons (2,000 lbs)   0.91      metric tons
square inches            6.45      square centimeters
square feet              0.09      square meters
square yards             0.84      square meters
square miles             2.60      square kilometers
acres                    0.40      hectacres

millimeters              0.04      inches
centimeters              0.39      inches
meters                   3.28      feet
meters                   1.09      yards
kilometers               0.62      miles
milliliters              0.20      teaspoons
milliliters              0.06      tablespoons
milliliters              0.03      fluid ounces
liters                   1.06      quarts
liters                   0.26      gallons
liters                   4.23      cups
liters                   2.12      pints
cubic meters            35.32      cubic feet
cubic meters             1.35      cubic yards
grams                    0.035     ounces
kilograms                2.21      pounds
metric ton (1,000 kg)    1.10      short ton
square centimeters       0.16      square inches
square meters            1.20      square yards
square kilometers        0.39      square miles
hectacres                2.47      acres

Temperature Conversion Between Celsius and Fahrenheit