Wash and cut the vegetables up small, set them over the fire with 2 quarts of water. When boiling, stir in the oatmeal and allow all to cook gently for 2 hours. Rub the mixture well through a sieve, adding hot water it necessary. Return the soup to the saucepan, add the butter and pepper and salt, and let it boil up. The soup should be of a smooth, creamy consistency. Serve with sippets of toast or Allinson plain rusks.