The simplicity of the four dominoes made a strange spot of color as they walked together towards their hostesses. They were all about the same height and build, they marched in step, and their bells jingled in unison.
"How do you do," they mumbled as they shook hands.
Muriel Grey, dressed, as Miss Pringle had suggested, in the dainty pinks and blues of a Dresden shepherdess, stood beside her mother. She was not masked as her guests were, and her puzzled surprise was plain to be seen.
"Why, who can you be?" she exclaimed. "I have guessed every girl and boy so far, but I haven't the slightest idea who you are. Please say something," she begged.
"You look very pretty to-night."
"What a lot of people there are."
"We are all so glad to be here."
"Think hard and you will surely guess."
All four answers were mumbled at once and poor Muriel was more confused than ever.
"I think your costumes are delightful and it is great fun to have four unknown guests," Mrs. Grey said. "I shall be watching you all anxiously when the gong rings to unmask. Don't run away like Cinderella when you hear it, will you?" she added, smiling.