First Edition, Macmillan, 1883
Second Edition, Dent & Dutton (Everyman), 1907
The full text of the second edition is provided here in two alternative
formats. Note that this work is ongoing. The version provided here is
preliminary and subject to change as corrections are made. Please notify
the editor of any errors you find in the text.
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The full text of the second edition is also provided here in page image facsimile format,
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Part 1: PDF (9 Mb)
Part 2: PDF (7 Mb)
Part 3: PDF (8 Mb)
George Romanes wrote the following