1. Andrews, E. A. ’97 a. Spinning Powers of certain Eggs. The american Naturalist, March 1th 1897.
2. Derselbe ’97 b. Ham mar’s Ectoplasmic Layer. Ibidem Dec. 1897.
3. Derselbe ’98a. Filose Activity in Metazoan Eggs. Zoölogical Bulletin, July 1898. Vol. II, No. 1.
4. Derselbe ’98b. Activities of the Polar Bodies of Cerebratulus. Archiv f. Entwicklungsmech. 1898. Bd. 6.
5. Derselbe ’98c. Some Ectosarcal Phenomena in the Eggs of Hydra. Johns Hopkins Univ. Circ. 1898. Vol. 18, No. 137.