. This Lamarck-Haeckel doctrine was under a cloud
for a recent decade, during the brief passing of the Weismannian myth,
but it has now emerged, and stands as the one recognized factor in the
origin of those variations whose cumulative preservation through natural
selection has resulted in the evolution of organic forms.

But may there not be other factors, as yet unrecognized, that supplement
the Lamarckian and Darwinian principles in bringing about this
marvellous evolution of beings? That, it would seem, is the most vital
question that the philosophical zoology of our generation must hand on
to the twentieth century. For today not even Professor Haeckel himself
can give it answer.

VII. SOME MEDICAL LABORATORIES AND MEDICAL PROBLEMS

THE PASTEUR INSTITUTE

THE national egotism that characterizes the French mind is not without
its compensations. It leads, for example, to the tangible recognition
of the merits of the great men of the nation and to the promulgation
of their names in many public ways. Thus it would be hard to mention a
truly distinguished Frenchman of the older generations whose name has
not been given to a street in Paris. Of the men of science thus
honored, one recalls off-hand the names of Buffon, Cuvier, Geoffroy
Saint-Hilaire, Pinel, Esquirol, Lamarck, Laplace, Lavoisier, Arago,
Claude Bernard, Broca--indeed, one could readily extend the list
to tiresome dimensions. Moreover, it is a list that is periodically
increased by the addition of new names, as occasion offers, for the
Parisian authorities never hesitate to rechristen a street or a portion
of a street, regardless of former associations.

One of the most recent additions to this roll of fame is the name of
Pasteur. The boulevard that bears that famous name is situated in a
somewhat out-of-the-way corner of the city, though to reach it one has
but to traverse the relatively short course of the Avenue de Breteuil
from so central a position as the tomb of Napoleon. The Boulevard
Pasteur itself is a not long but very spacious thoroughfare, which
will some day be very beautiful, when the character of its environing
buildings has somewhat changed and its quadruple rows of trees have had
time for development. At present its chief distinction, in the eyes
of most observers, would probably be found in the fact that it is the
location of the famous _fete forain_ at one of the annually recurring
stages of the endless itinerary of that noted