Science: Monster Maker

The business of Embryologist Etienne Wolff, of Paris' College de France, is to make monsters. His principal items of equipment are an X-ray machine, a few delicate instruments and an incubator stocked with fertile hens' eggs. The results are enshrined along the walls of his spotless laboratory in row upon row of glass jars filled with alcohol. The jars contain hundreds of monstrous chicks—chicks with one eye or three eyes or no eye at all, with four legs or three legs or two legs fused into one. There are two-headed chicks and three-headed chicks....

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