It is a wonder what Mr. Gould can do with the most unlikely phenomena: a tiny organism's use of the earth's magnetic field as a guide to food and comfort, for instance, or the panda's thumbwhich isn't one&Science writing at its best.Stephen Jay Gould is a serious and gifted interpreter of biological theory, of the history of ideas, and of the cultural context of scientific discovery&Gould can do no wrong&As long as he writes, you cannot help but readand enjoy. Gould is a natural writer; he has something to say and the inclination and skill with which to say it. P. B. Medawar,