The Effect of Gamma Rays on Man-In-The-Moon Marigolds — Paul Zindel

Beatrice was a mother . . . and the embittered ringmaster of the circus Hunsdorfer featuring three generations of crazy ladies living under the sloppiest big top on earth. Nanny was no problem. She sat and stared and stayed silent as a venerable vegetable should. Ruth was half-mad and easily bought with an occasional cigarette. But how is the world would Beatrice control Tillie--keeper of rabbits, dreamer of atoms, true believer in life, hope, and the effect of gamma rays on man-in-the-moon marigolds . . .