How did they trial witches in the 17th century?

They would tie up women that looked a bit like witches and would throw them into water. If they didn't float they were not a witch. some women were left to long in the water and would drown.
pricking them with a needle if they bleed they were innocent but fear draws blood from the skin so they wouldn't bleed
they would be put on a scale and and weighed against 2 huge bibles and if they were heavier they were innocent but remember the bibles are huge.
also they would be thrown into water and if they sunk they were innocent but the human body cant sink
and they would be pushed under water and if they didnt dronw they were are witch because water rejects evil and if they drowned they were innocent ......and dead
young children would be made to make up stories about the witch, the weirder the better as long as it made the women sound bad
Another favourite was to roll them down hills in barrels.,with spikes fitted on the inside,if at the bottom of the hill they were alive,they were burned as witches,if dead,they were innocent!

They stabbed the witch with needles to find the place where no blood flowed, where 'familiars', demons in animal form, fed on the flesh.