THE GROWTH AND METAMORPHOSIS OF THE ARBACIA PUNCTULATA PLUTEUS, AND LATE DEVELOPMENT OF THE WHITE HALVES OF CENTRIFUGED EGGS

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Abstract
The A. punctulata plutei have been raised at Woods Hole through late development and metamorphosis by feeding them Nitzschia closterium, a diatom. A descr. of the development is accompanied by photographs. Metamorphosis occurred in about 4 mos. after fertilization. The plutei from the centrifuged eggs and the white halves obtained by centrifuging (then fertilized) develop in the same way, and after a few days cannot be distinguished from normal plutei.
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