Pick over clams; removing any shell fragments; leave whole, or, if you prefer, mince or grind medium fine. Lightly brown salt pork in a large, heavy saucepan over moderate heat, lift out and reserve. Stir-fry onion in drippings for 5 - 8 minutes until pale golden, add potatoes, water, clam liquid and salt pork. Cover and simmer 10 - 12 minutes until potatoes are nearly tender, stirring occasionally. Add clams, milk, cream, salt and pepper. Cover and simmer for 5 minutes to heat through; do not boil. Ladle into hot bowls, dust with paprika and serve.