118 REPORT OF THE COMMISSIONER OF FISHERIES. 



A statistical study of Fundulus majalis, with a view to the determination of selective char- 

 acters. — Francis Bertody Sumner, Ph. D., instructor in zoology, College of the City 

 of New York, and director of Woods Hole Laboratory. 



In addition to this work the compilation of the catalogue of the fauna and flora of 

 the Woods Hole region, elsewhere referred to, was conducted by Doctor Sumner, 

 with the assistance of Mr. Raymond C. Osburn, graduate student, Columbia Univer- 

 sity, and others. 



The color changes of fishes. — F. C. Carlton, graduate student, Harvard University. 



Experiments upon phototactic responses of star-fish. — Grant Smith, graduate student, 

 Harvard University. 



Studies of the morphology of Hydromedusse. — Henry Farnham Perkins, Ph. D., 

 instructor in biology. University of Vermont. 



Minute structure of the rods of the retina of fishes. — Arthur D. Howard, M. S., grad- 

 uate student, Harvard University. 



A study of a parasite of the oyster {Bucephalus cucuUus McC). — John Y. Graham, 

 Ph. D., professor of biology. University of Alabama. 



Collection of material for histological studies. — Ulric Dahlgren, M. S., assistant pro- 

 fessor of histology, Princeton University. 



(1) Dimorphism in Metridium marginatum. (2) The blood parasites of the turtle. — 

 Clarence W. Hahn, A. M., graduate student, Harvard University. 



The effect of heredity on the dimorphism exhibited in the optic chiasma of teleosts. — 

 Austin P. Larrabee, A. M., graduate student, Harvard University. 



The reaction of eyeless fish to light. — Joseph A. Long, graduate student. Harvard 

 University. 



Comparative study of muscular tonus. — Samual Steen Maxwell, Ph. D., instructor in 

 physiology. Harvard Medical School. 



Studies on the phosphorescence of ctenophores. — Amos W. Peters, Ph. D., instructor 

 in physiology, University of Illinois. 



Studies of the gregarines. — George G. Scott, M. A., tutor in the College of the City 

 of New York. 



Phototaxis in Copepoda. — John A. Shott, A. M., professor of biology and physics, 

 Westminster College. 



(1) Crustacean metamorphosis. (2) Studies of the head and alimentary canal of 

 Diptera. — Millett T. Thompson, Ph. D., instructor in zoology, collegiate department, 

 Clark University. 



BEAUFORT LABORATORY (dR. CASWELL GRAVE, DIRECTOR). 



At the beginning- of the fiscal jq^v the laboratory at Beaufort, N. C, 

 had been open for over a month, and it was continued in operation 

 until September 30; during July and August all of the rooms were 

 occupied by investigators and student assistants. The facilities of the 

 laboratory had been improved in the preceding fiscal 5^ear by the 

 installation of a pumping plant, and during the summer of 1903 it 

 was possible to keep living material for study in the laboratory and to 

 maintain an instructive exhibit in the aquaria, where from 50 to 200 

 live animals, principally small and moderate sized fishes, with a few 

 species of invertebrates, were on exhibition daily. Owing to the lack 

 of light and aeration in the large tanks, it was found impossible to 

 maintain an exhibii; of the larger species of fishes, but plans for over- 

 coming this difficulty are now under consideration. The laboratory 



