NAMES, PROEFERTIES, AND DOSE OF MEDICINES. 1099 
Conpvranco Barx.— This drug was introduced as a remedy 
for cancer. Dose of the powder, 3 to 1 teaspoonful. Safe 
6d. per oz. 
Corton Root.—Used by the natives of Africa tor its 
emmenagogue properties. Dose of fluid extract 3 to 1 
teaspoonful, Use with care. 
Croton O1t.—A most powerful drastic purgative, used in 
obstinate constipation and apoplexy, also as a counter-irritant 
im very small doses; one part in ten of olive oil as an 
ordinary purgative. Dose: 4 to 1 drop. Very dangerous 
in over-doses. 1s. 6d. per oz. 
Diaitatis.— Better known as foxglove leaves. The dried 
leaves of digitalis purpurea (foxglove leaves) have a faint, 
agreeable, tea-like odour; their taste is somewhat bitter and 
acrid. At least five principles are said to be present in fox- 
glove leaves: digitoxin, digitalin, digitalein, digitonia, and 
digitin. The first three are cardiac poisons. Digitonia has 
an action like that of japonin, being a powerful irritant, a 
Jocal anesthetic, and a muscular poison. Digitin appears to 
be inert. Digitoxin and digitalin are insoluble in water, 
while digitalein is readily soluble. Digitalis is given as a 
tardiac sedative in almost all cases where there is excited 
action, whether it be of sympathic origin or due to organic 
disease of the heart or great vessels, as hypertrophy, valvular 
disease, aneurism, &c. Digitalis is also employed as a 
diuretic, more especially when the deficient flow of urine is 
due to heart disease and associated with dropsy. It should 
not be used in the drepsy of chronic Bright’s disease. Dose 
of the powdered leaves, 4 to 14 grains; of infusion 2 to 4 
drachms ; of tincture 5 to 30 drops; dose of digitalis, 1-60th 
to 1-39th grain We would not use any of these concentrations ; 
the tincture or the infusion is strong enough, and must be 
used very carefully, Leaves, 6d per oz. Tincture, 9d per 
Cz. 
Donovans (solution).—Solution of iodide of arsenium and 
mercury, A very pale yellow liquid, having no odour, but a 
