I have just finished "A Dictionary of Sussex Folk Medicine" by Andrew Allen which has sat on my shelf for years. It was one of those books I picked up for 50p at a jumble sale and have previously dipped into from time to time. Reading it properly from cover to cover has been absolutely fascinating as it's lifted the lid on how our ancestors tried to cure ills and maladies when paying a Doctor was prohibitively expensive and beyond the purses of many. Often these "cures" seem like madness to our modern minds, but in some instances there was real science behind it even if people didn't understand why they worked.
One of the entries which really struck me was learning that wounds used to be wrapped in cobwebs to stop the blood from flowing from a very early time. At one time soldiers actually carried boxes of webs as part of their battle kit for this exact reason, but over time the practice was seen as unhygienic and it fell out of favour. Now for the interesting part..... wads of cobwebs behave like absorbent cotton wool and there are proteins on the silk surface that help blood coagulate. Finally because they are charged with static electricity they repel bacteria with an opposite charge including the one that causes sepsis. Not one you want to be attracting under any circumstances, especially if you are wounded.
It's been such a fascinating read and my one regret is that I left it so long to discover all this!