munity
from certain of these diseases through the use of cultures of the
noxious bacteria themselves. He believed that these methods could be
extended and developed until all the contagious diseases, which hitherto
have accounted for so startling a proportion of all deaths, were brought
within the control of medical science. His deepest thought in founding
the institute was to supply a tangible seat of operations for this
attempted conquest, where the brilliant assistants he had gathered about
him, and their successors in turn, might take a share in this great
struggle, unhampered by the material drawbacks which so often confront
the would-be worker in science.

He desired also that the institution should be a centre of education
along the lines of its work, adding thus an indirect influence to the
score of its direct achievements. In both these regards the institution
has been and continues to be worthy of its founder. The Pasteur
Institute is in effect a school of bacteriology, where each of the
professors is at once a teacher and a brilliant investigator. The chief
courses of instruction consist of two series each year of lectures and
laboratory demonstrations on topics within the field of bacteriology.
These courses, at which all the regular staff of the institution assist
more or less, are open to physicians and other competent students
regardless of nationality, and they suffice to inculcate the principles
of bacteriology to a large band of seekers each year.

But more important, perhaps, than this form of educational influence is
the impetus given by the institute to the researches of a small, select
band of investigators who have taken up bacteriology for a life work,
and who come here to perfect themselves in the final niceties of the
technique of a most difficult profession. Thus such men as Calmette,
the discoverer of the serum treatment of serpent-poisoning, and Yersin,
famous for his researches in the prevention and cure of cholera by
inoculation, are "graduates" of the Pasteur Institute. Indeed, almost
all the chief laborers in this field in the world to-day, including the
directors of practically all the daughter institutes bearing the same
name that are now scattered all over the world, have had at least a
share of their training in the mother institute here in Paris.

Of the work of the men who form the regular staff of the Pasteur
Institute only a few words need be said here. Doctors Roux, Grancher,