Grandma Ashworth's Watermelon Pickle

Ingridients of Grandma Ashworth's Watermelon Pickle:

• 1/4 cup salt
• 2 pounds watermelon rind, white part only, cut into 1-inch cubes
• 4 cups white sugar
• 2 cups white vinegar
• 2 cups water
• 1 lemon, thinly sliced
• 2 tablespoons broken cinnamon stick
• 1 tablespoon whole cloves
• 1 18-inch square of cheesecloth
• 3 (1 pint) canning jars with lids and rings