Old Fashioned Bean Soup

1 pound dry navy beans, soaked overnight in water
2 quarts water
1 pound meaty ham bones or pieces of ham
Salt to taste
5 whole peppercorns (20) or 1/2 teaspoon coarse pepper
1/2 cup chopped celery leaves
1 medium onion, chopped
1 bay leaf

Put all ingredients into crock pot. Cover and cook on LOW for 10 to 12 hours or on HIGH for 5 to 6 hours.