MADAME Carambeau wanted it strictly understood that she was not to be disturbed by Gustave's birthday party. They carried her big rocking-chair from the back gallery, that looked out upon the garden where the children were going to play, around to the front gallery, which closely faced the green levee bank and the Mississippi coursing almost flush with the top of it. The house - an old Spanish one, broad, low and completely encircled by a wide gallery - was far down in the French quarter of New Orleans. It stood upon a square of ground that was covered thick with a semi-tropical growth of plants and flowers. An impenetrable board fence, edged with a formidable row of iron spikes, shielded the garden from the prying glances of the occasional passer-by. Madame Carambeau's widowed daughter, Madame Cécile Lalonde, lived with her. This annual party, given to her little son, Gustave, was the one defiant act of Madame Lalonde's existence. She persisted in it, to her own astonishment and the wonder of those who knew her and her mother. For old Madame Carambeau was a woman of many prejudices - so many, in fact, that it would be difficult to name them all. She detested dogs, cats, organ-grinders, white servants and children's noises. She despised Americans, Germans and all people of a different faith from her own. Anything not French had, in her opinion, little right to existence