How people were tested to determine whether or not they were a witch or wizard.
Many people in the time of the fateful witch trials believed that if a woman guilty of evil-doing was thrown into a body of water and floated, they were indeed a witch. They believed that God's holy water would repel their evil souls, thus allowing them to float. However, even if you were innocent and you sunk to the bottom, you often times drowned.
It was also believed that if the accused possessed peculiar markings, such as freckles and warts, he or she was a witch or wizard. The examiners also looked out for what they all called a witch's teat, thought to provide their familiars (animal guides) with blood for further nourishment, such as a mother feeding her baby.
Another popular test for witchcraft was using needles to prick the suspects skin. If the skin bled, they were innocent. However, many persecutors used dull needles to condemn them to be hanged.
When a convicted witch was "visited" by animals in the jail holding them, it was thought that the suspect had called upon her animal familiars. Familiars are creatures that aid the witch in performing magic. The presence of creatures in a jail cell would prove the suspect's guilt of sorcery.
Although it may sound odd, the people of Salem in the 1690s believed that they could weigh the suspected witch to prove either their innocence or guilt. The suspects would be weighed on a scale with the Bible on the other plate. If innocent, the suspect would be heavier than the book. However, if guilty of witchcraft, the suspect would weigh lighter than the book, proving their disloyalty to God and corrupt soul.