This section is from the book "Practical Cooking And Serving", by Janet McKenzie Hill. Also available from Amazon: Practical Cooking and Serving: A Complete Manual of How to Select, Prepare, and Serve Food [1919].
1 quart of standard chicken broth (flavored with onion, celery, sweet herbs, etc.).
1/2 cup of cream. Salt and pepper. Whites of two eggs. 1 pint of milk. 2 tablespoonfuls of fine, quick-cooking tapioca. 2 yolks of eggs.
Scald the broth, stir in the tapioca and let cook over hot water (double-boiler) until transparent; add the milk scalded, remove from the fire and stir in the beaten yolks diluted with the cream; let thicken without boiling, then turn into the tureen, adding salt and pepper; arrange on the top the whites of the eggs, beaten dry, with a few grains of salt, and poached, by spoonfuls, in hot water, or milk; or serve in bouillon cups with a spoonful of the poached white on the top of each cup.

 
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