During the regular laboratory work in embryological technique, the finding of anomalous chick embryos is so common that little interest is attracted. However, when one student reported the rhythmic beating of a solitary chick heart apparently without the accompanying chick, special interest was stimulated. This strange pulsating bit of protoplasm was noted in an egg of about 50 hours incubation. It was transferred to warm, normal physiological saline solution and observed for fifteen minutes. The beating was not unlike that of a normal chick heart of corresponding age. In order to assure a good fixation, the specimen was removed from the yolk and placed in Bouin's fluid, stained in Borax Carmine and mounted in toto on a slide by the usual borax carmine method.
Proceedings of the Iowa Academy of Science
©1942 Iowa Academy of Science, Inc.
Goldsmith, William M. and Crabb, Dayrle N.
"An Anomalous Chick Embryo Pulsating as a Heart,"
Proceedings of the Iowa Academy of Science, 49(1), 535-537.
Available at: https://scholarworks.uni.edu/pias/vol49/iss1/105