Chicken bouillon (No. 2)

Cut a four-pound fowl into pieces and put it over the fire with four quarts of cold water. Bring very slowly to the boiling point, and simmer gently for three hours, or until the meat is so tender that it slips from the bones. Add half of a sliced onion and three stalks of celery, and simmer for an hour longer. Turn into a bowl and set in a cold place for some hours. When thoroughly chilled remove the fat from the surface of the soup, strain out the bones and skim. If the liquor is jellied after skimming it, set it on the fire long enough to melt the jelly from the bones. Strain through coarse muslin, letting it drip through, but not squeezing the bag. Put over the fire and, when lukewarm, throw in the unbeaten white and broken shell of an egg; stir to a quick boil and again strain through muslin after seasoning to taste.