ld
be deluded by the argument that since we do not know what is there the
suppositions in question must be accepted as true. We cannot, as a
matter of observation, assert that these supposed beings are not
there, but we can find no reason to make it appear even probable, nor
any means of proving by experiment, that they are. We refuse to
entertain such suppositions.

FOOTNOTES:

[Footnote 10: This subject is discussed and some account of the
chemical nature of protoplasm given in my book, "Science from an Easy
Chair" (Methuen, 1910), which consists of a first series of papers
similar to those which are collected in the present volume as a
"Second Series." The chapters in the earlier volume to which I wish to
direct the reader's attention are those entitled "The Universal
Structure of Living Things," "Protoplasm, Life and Death," "Chemistry
and Protoplasm," "The Simplest Living Things."]

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