ncy of his scientific life, but in its full vigour
and maturity.

[1] It may be worth while to exhibit to our readers a few of Dr. Oken's
postulates or arguments as specimens of his views:--
I wrote the first edition of 1810 in a kind of inspiration.
4. Spirit is the motion of mathematical ideas.
10. Physio-philosphy [Transcriber's note: sic] has to ... pourtray
the first period of the world's development from nothing; how the
elements and heavenly bodies originated; in what method by
self-evolution into higher and manifold forms they separated into
minerals, became finally organic, and in man attained
self-consciousness.
42. The mathematical monad is eternal.
43. The eternal is one and the same with the zero of mathematics.

Sir C. Lyell devotes the 33rd to the 36th chapter of his "Principles of
Geology" to an examination of this question. He gives a clear account of
the mode in which Lamarck supported his belief of the transmutation of
species; he interrupts the author's argument to observe that "no
positive fact is cited to exemplify the substitution of some _entirely
new_ sense, faculty, or organ--because no examples were to be found";
and remarks that when Lamarck talks of "the effects of internal
sentiment," etc., as causes whereby animals and plants may acquire _new
organs_, he substitutes names for things, and with a disregard to the
strict rules of induction, resorts to fictions.

He shows the fallacy of Lamarck's reasoning, and by anticipation
confutes the whole theory of Mr. Darwin, when gathering clearly up into
a few heads the recapitulation of the whole argument in favour of the
reality of species in nature. He urges:--[Transcriber's note: numbering
in original]

1. That there is a capacity in all species to accommodate themselves to
a certain extent to a change of external circumstances.

4. The entire variation from the original type ... may usually be
effected in a brief period of time, after which no further deviation can
be obtained.

5. The intermixing distinct species is guarded against by the sterility
of the mule offspring.

6. It appears that species have a real existence in nature, and that
each was endowed at the time of its creation with the attributes and
organization by which it is now distinguished.[1]

[1] "Principles of Geology," edit. 1853.

We trust that Sir C. Lyell abides still by these truly philosophical