"The animals themselves did not long survive in the aquarium. A slow process of dissolution set in at some point on the body, and gradually more and more of the tissue melted away till only the tentacle- and brain-region remained. This crept about for a few days, but finally it, too, disintegrated. THE UNIVERSITY OF CHICAGO, May 12, 1893."
Wheeler, W. M. (1894). Journal of Morphology, 9(2), 195–201. doi:10.1002/jmor.1050090203