176 THE NEW ZEALAND FAMILY UERB DOCTOR. 
seen 1m cases of chorea, epilepsy, hysteria, neuralgia, and 
whooping cough. It 1s also employed externally as a 
desiccant and astringent, upon excoriated surfaces and shght 
ulcerations, either as an ointment or alone, or mixed with 
starch and dusted upon the parts. Dose, | to 5 grains. 
Use very carefully. 4d per oz. 
Zinc, Sulphate of.—In small doses sulphate of zinc acts 
something the same as the oxide, externally, in solutions of 
different strengths it is employed as a lotion or injection, 
as in ophthalmia, gleet, leucorrhosa, &c. Use it carefully 3d 
per ounce. 
Zrinct, Vatertanas Valerianate of Zinc.—Prepared by 
mixing a solution of sulphate of zinc and valerianate of 
sodium, and separating and purifying the crystals which are 
formed. Valerianate of zinc is a nervine, tonic, and anti- 
spasmodic, and has been given with advantage in cases where 
the combined action of the metal and valerian seems desirable, 
as in hysteria, chorea, epilepsy, and various neuralgic 
affections, especially headache Dangerous. Dose, | to 3 
grains. 
Dose for children:—The rule usually followed is Dr. 
Young’s—which is as follows: Add 12 to the age of the 
child, and divide the age of the child by the sum. Thus, for 
a child of 3 years, it would be 3 divided by $3 + 12 = 3-15ths, 
or 1-5th of the dose of an adult. 
