154 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
and Mr. Boyer in investigating the embryology of a common minnow 
(Fundulus heteroclitus). 
Mr. B. H. Waters and Mr. C. W. Stevens, of Princeton College, gave 
their attention to inquiries of a general character, while Prof. A. A. 
Wright and Mr. M. J. Greenman, who were in attendance for only a 
short time, were occupied in securing miscellaneous collections of marine 
animals for Oberlin College and the University of Pennsylvania, 
respectively. 
SUMMER OF 1890. 
During the summer of 1890 Prof. F. H. Herrick continued his inves- 
tigations, begun the previous year, respecting the life history of the 
lobster. Prof. H. C. Bumpus, of Brown University, was also present 
during the spring months and gave attention to the same species, 
his studies having special reference to the length of time the eggs are 
carried by the parent lobster before hatching. Mr. R. G. Harrison and 
Mr. J. L. Kellogg, of Johns Hopkins University, worked conjointly on 
several problems relative to the habits and fixation of oyster spat, and 
the latter also took up the study.of the anatomy and life history of sev- 
eral bivalve mollusks, including the more common edible species, such 
as the quahog, soft clam, scallop, and mussel. Mr. George H. Field, 
also of Johns Hopkins University, continued the inquiries commenced 
by Prof. Brooks in 1889 on the development of starfishes, and extended 
his observations to other species of echinoderms. Mr. EK. G. Conklin, 
of the same institution, studied the embryology of Urosalpinx and Crepi- 
dula, two gastropod mollusks, of which the former is the so-called oyster 
drill, second only to the starfish as to the amount of damage which it 
inflicts upon the oyster-beds of southern New England. 
Dr. kK, A. Andrews investigated the structure and development 
of the eyes of annelid worms, and the growth of a small nemertean 
(Meckelia). Dr. R. P. Bigelow, who was attached to the schooner 
Grampus, in addition to the physical observations assigned him, made 
large collections of surface animals in the region of the Gulf Steam, 
which occupied his attention while the vessel was in port. Prof. Wil- 
liam Patten, of the University of North Dakota, was interested in the 
study of the sense organs of crustaceans and of the horseshoe erab, 
and Mr. W.MeM. Woodworth continued his observations upon the 
parasitic planarian which lives on the gills of the latter species. ‘The 
development of teleostean fishes was studied by Dr. Thomas G. Lee, of 
Yale University, and general inquiries were carried on by Mr. W. C. 
Prime, of Princeton College. 
