st in proportion as the experiments are logically planned and
carefully executed will the results be valuable, even though they be but
negative. Just in proportion as the worker, by inclusion and exclusion,
attains authentic results--results that will bear the test of
repetition--does his reputation as a dependable working biologist become
established.

The subjects attacked in the marine laboratory first and last are
practically coextensive with the range of general biology, bacteriology
excepted. Naturally enough, the life histories of marine forms of
animals and plants have come in for a full share of attention. But, as I
have already intimated, this zoological work forms only a small part of
the investigations undertaken here, for in the main the workers prefer
to attack those general biological problems which in their broader
outlines apply to all forms of living beings, from highest to lowest.
For example, Dr. Driesch, the well-known Leipzig biologist, spends
several months of each year at the laboratory, and has made here most of
those studies of cell activities with which his name is associated.
The past season he has studied an interesting and important problem of
heredity, endeavoring to ascertain the respective shares of the male and
female parents in the development of the offspring. The subjects of his
experiments have been various species of sea-urchins, but the principles
discovered will doubtless be found to apply to most, or perhaps all,
forms of vertebrate life as well.

While these studies were under way another developmental problem was
being attacked in a neighboring room of the laboratory by Professor
Kitasato, of the University of Tokio, Japan. The subjects this time were
the embryos of certain fishes, and the investigation had to do with
the development of instructive monstrosities through carefully designed
series of injuries inflicted upon the embryo at various stages of its
development. Meantime another stage of the developmental history of
organic things--this time a microscopical detail regarding the cell
divisions of certain plants--has been studied by Professor Mottier,
of Indiana; while another American botanist, Professor Swingle, of
the Smithsonian Institution, has been going so far afield from
marine subjects as to investigate the very practical subject of the
fertilization of figs as practised by the agriculturists about Naples.

Even from these few citations it will appear how vari