will have to boast.

The actual equipment of the bacteriological laboratory here is not,
indeed, quite as meagre as it seems at first, there being numerous
rooms, scattered here and there, which in the aggregate give opportunity
for work to a large number of investigators, though no single room makes
an impressive appearance. There is one room, however, large enough to
give audience to a considerable class, and here lectures were given by
Professor Koch and continue to be given by his successors to the special
students of bacteriology who come from all over the world, as well as to
the university students who take the course as a part of their regular
medical curriculum. In regard to this feature of its work, the Institute
of Hygiene differs in no essential respect from the Pasteur Institute
and other laboratories of bacteriology. The same general routine of work
pertains: the patient cultivation of the minute organisms in various
mediums, their careful staining by special processes, and their
investigation under the microscope mark the work of the bacteriologist
everywhere. Many details of the special methods of culture or treatment
originated here with Professor Koch, but such matters are never kept
secret in science, so one may see them practised quite as generally
and as efficiently in other laboratories as in this one. Indeed, it may
frankly be admitted that, aside from its historical associations with
the pioneer work in bacteriology, which will always make it memorable,
there is nothing about the bacteriological laboratory here to give it
distinction over hundreds of similar ones elsewhere; while in point of
technical equipment, as already noted, it is remarkable rather for what
it lacks than for what it presents.

The department of bacteriology, however, is only one of several
important features of the institute. One has but to ascend another
flight of stairs to pass out of the sphere of the microbe and enter a
department where attention is directed to quite another field. We have
now come to what may be considered the laboratory of hygiene proper,
since here the investigations have to do directly with the functionings
of the human body in their relations to the every-day environment.
Here again one is struck with the meagre equipment with which important
results may be attained by patient and skilled investigators. In only
one room does one find a really elaborate piece of apparatus. This
exceptional mechanis