LENTIL SOUP (another)

2 oz. of Egyptian lentils, 2 oz. each of carrots and turnips cut up small, 1/2 oz. of onion chopped fine, 1/2 oz. of butter, seasoning to taste, 1 pint of water. Cook the vegetables and lentils in the water until quite tender, then rub them through a sieve. Return to the saucepan, add butter and seasoning, boil up, and serve with sippets of toast.