organization presents in each organic kingdom,
finally to certain changes which are seen to be undergone in certain
circumstances, we are convinced:

"1. That the nature of organic movement is not only to develop the
organization but also to multiply the organs and to fulfil the
functions, and that at the outset this organic movement continually
tends to restrict to functions special to certain parts the
functions which were at first general--_i.e._, common to all parts
of the body;

"2. That the result of _nutrition_ is not only to supply to the
developing organization what the organic movement tends to form, but
besides, also by a forced inequality between the matters which are
assimilated and those which are dissipated by losses, this function
at a certain term of the duration of life causes a progressive
deterioration of the organs, so that as a necessary consequence it
inevitably causes death;

"3. That the property of the movement of the fluids in the parts
which contain them is to break out passages, places of deposit, and
outlets; to there create canals and consequently different organs;
to cause these canals, as well as the organs, to vary on account of
the diversity both of the movements and of the nature of the fluids
which give rise to them; finally to enlarge, elongate, to gradually
divide and solidify [the walls of] these canals and these organs by
the matters which form and incessantly separate the fluids which are
there in movement, and one part of which is assimilated and added to
the organs, while the other is rejected and cast out;

"4. That the state of organization in each organism has been
gradually acquired by the progress of the influences of the movement
of fluids, and by those changes that these fluids have there
continually undergone in their nature and their condition through
the habitual succession of their losses and of their renewals;

"5. That each organization and each form acquired by this course of
things and by the circumstances which there have concurred, were
preserved and transmitted successively by generation [heredity]
until new modifications of these organizations and of these forms
have been acquired by the same means and by new circumstances;

"6. Finally, that from the uninterrupted concurrence of these causes
or from these laws of nature, together with much time and with an
almost inconceivab