it) really stands in no practical relation to the modern and natural
theory which is associated with the name of CHARLES DARWIN, and which
has been further taken up by Mr. HERBERT SPENCER and others as the
foundation for a complete scheme of cosmic philosophy. The theory is
now, in its main features, admitted by every one. But there are a few
who would push it beyond its real ascertained limits, and would
substitute fancies for facts; they are not content to leave the
_lacunae_, which undoubtedly do exist, but fill them up by
hypothesis,[1] passing by easy steps of forgetfulness from the "it was
possibly," "it was likely to have been," to the "it must have been," and
"it was"!

To all such extensions we must of course object; there are gaps in the
scheme which can be filled in with really great probability, and in such
cases there will be no harm done in admitting the probability, while
still acknowledging it as such. An overcautious lawyer-like captiousness
of spirit in such matters will help no cause and serve no good purpose.
Nor is it at all difficult in practice to draw the line and say what is
fairly admissible conjecture and what is not. There are other gaps,
however, that at present, no real analogy, no fair inferential process,
can bridge over; and to all speculations on such subjects, if advanced
as more than bare and undisguised guesses, objection must be taken.

If this one line had been fairly and firmly adhered to from the first,
it can hardly be doubted that much of the acrimony of controversy would
have been avoided. It is just as essential at the present moment to
insist on the point as ever. But to proceed. Stated in the extreme
form, the theory is, that given matter as a beginning, that matter is
thenceforth capable, by the aid of fixed and self-working laws, to
produce and result in, all the phenomena of life--whether plant, animal,