20 
Assistant in the University, made several trips to the Station 
with Superintendent Smith during his regular visits in the 
winter of 1894-95, and hotli he and Professor T. J. Burrill, of 
the University department of botany, have made occasional 
collections of aquatic plants. 
Mr. Miles Newberry, an experienced fisherman of Havana, 
has served the Station very efficiently from the beginning as a 
general assistant. He has been particularly serviceable as an 
aid in plankton work and has had immediate charge of the boat 
and of the aquatic equipment generally. 
GENERAL EXHIBIT OF RESULTS. 
Although the first report of results accomplished in a field 
so extensive and complicated as that occupied by our Biological 
Station must necessarily be largely an exhibit of work in 
progress, it seems possible to make a statement which shall 
give a comprehensive, if somewhat indefinite, idea of the out¬ 
come of operations thus far undertaken. This report may he 
made most conveniently under the heads of plankton operations, 
collections accumulated, entomological studies, molluscan col¬ 
lections and determinations, fresli-water worms, studies of 
Protozoa and Rotifera, chemical determinations, reports and 
publications, and the summer opening of the Station. 
PLANKTON OPERATIONS. 
The minute plant and animal life suspended in the waters 
of a river system, moving downwards with its current and 
washed to and fro by its waves, composes what is known to the 
modern biologist as the plankton of its waters. The Station 
operations in this field were primarily directed to a study of the 
amount of this plankton in the various locations selected, its 
seasonal and other periodic changes, its local and vertical dis¬ 
tribution, its composition as to the species represented, and its 
relation in the general system of aquatic life. Our field of 
operations is a unique one, as yet practically untouched by the 
scientific investigator in so far as it is limited to a river system 
and its dependent waters. 
The plankton substations in 1894 and 1895 were five in 
number: one in the river, a short distance above the foot of 
Quiver Lake; another in Quiver Lake itself; a third in Dogfish 
