Dock for cuts & scrapes

When I was a child (I am now 91) we lived on the Isle of Man, we were quite hard up and couldn’t afford doctors’ bills. My father was mowing grass one day and the scythe slipped and cut him very badly on the leg, he daren’t stay home from work, so with my mother’s help, doctored himself; every day after school I collected large dock leaves, which mother crushed with a rolling pin, then applied the leaves straight on to the cut which in time healed and caused no further trouble