178 CARNEGIE INSTITUTION OF WASHINGTON. 



ingly, the Department of Marine Biology made a grant to Professor 

 Treadwell to enable him to visit Bermuda, accompanied by an artist 

 and an assistant, and he thus spent five weeks at this well-equipped 

 station. In his report he draws comparisons between the Tortugas 

 and the Bennuda annelid faunae. 



Annually since 1898 the Atlantic palolo worm, Eunice fucata Ehlers, 

 has swanned at Tortugas at or near the period of the last quarter of 

 the July moon, but occasionally at the time of the first quarter of the 

 moon when the last quarter came later than July 20. In 1916, 

 however, a dense swami came on July 14, the day of the full moon, and 

 an even more noteworthy swarm on July 20, the day of the moon's last 

 quarter. 



The following papers were published by agencies other than the 

 Carnegie Institution of Washington during the year as a result of studies 

 conducted partially or wholly under the auspices of the Department 

 of Marine Biology: 



Gary, Lewis R., 1916. The influence of the marginal sense-organs on the rate of regenera- 

 tion in Cassiopea xamachana. Journal of Experimental Zoology, vol. 21, No. 1. 



, 1915. The influence of the marginal sense-organs on functional activity in Cassi- 

 opea xamachana. Proceedings National Academy of Sciences, vol. 1, pp. 61 1-616. 



Clark, Hubert Lyman, 1915. Catalogue of recent Ophiurans: Based on the collection of 

 the Museum of Comparative Zoology. Memoirs Museum Comparative Zoology 

 at Harvard College, vol. 25, pp. 165-376, 20 plates. 



Harvey, E. Newton. The mechanism of light production in animals. Science, n. s., vol. 

 XLiv, pp. 208, 209, August 11, 1916. 



. The hght-producing substances, photogenin and photophelein, of luminous 



animals. Science, n. s., vol. xliv, pp. 652-654, November, 1916. 



Mayer, Alfred G., 1916. Nerve-conduction and other reactions in Cassiopea. American 

 Journal of Physiology, vol. 39, pp. 375-393, Febmary 1916. 



, 1916. A theory of nerve-conduction. Proceedings National Academy of Sciences, 



vol. 2, pp. 37-42, 2 figs. 



, 1916. Submarine solution of Umestone in relation to the Murray-Agassiz theory 



of coral atolls. Proceedings National Academy of Sciences, vol. 2, pp. 28-30. 



, 1916. Articles upon the history of Pacific islands. Scientific Monthly, vol. 1. 



Pratt, Henry S., 1916. The trematode genus Stephanochasrmis Loos in the Gulf of Mexico. 

 Parasitology, vol. 8, No. 3, pp. 229-238, pi. 13, January 1916. 



Vaughan, T. Wayland, 1916. The geologic significance of the growth-rate of the Floridian 

 and Bahaman shoal-water corals. Journal Washington Academy of Sciences, 

 vol. 5, No. 17, pp. 591-600, October 1915. 



, 1916. The results of investigations of the ecology of the Floridian and Bahaman 



shoal-water corals. Proceedings National Academy of Sciences, vol. 2, pp. 95- 

 100, February 1916. 



Volumes 7 and 8 of Researches from the Department of Marine 

 Biology were published, a quarto volume upon the researches pursued 

 by our expedition to the Murray Islands in 1913, treating of the ecology 

 of the coral reefs, the species of corals, and an analysis of rocks, sedi- 

 ments, bottom deposits, diatoms, and foraminifera, is about to be pub- 

 lished by the Carnegie Institution of Washington. 



Of the 17 colored plates for Dr. Clark's report upon the Murray 

 Island echinoderms, 8 have been completed, the long delay being 

 caused by war conditions which have profoundly affected Sydney, 



