The unseen universe, by Balfour Stewart                                   75232
  [Subtitle: or, physical speculations on a future state]
  [Author: Balfour Stewart]
  [Author: Peter Guthrie Tait]
  [Link: https://www.gutenberg.org/ebooks/75232]
  note: link will be active within two hours of posting.

Thanks to Tim Lindell, John Campbell and the Online Distributed
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Libraries.)

Regards,
Robert