New York & London, G.P. Putnam's, 1899. First edition, first impression. Paperback. A very good copy. The wraps issue, harder to find than the cased issue. "Mystery novel part of whose elucidation involves a science fiction device an invented method for photographing memories from the brain tissues." [Locke, Spectrum, 2:100]. A little chipping to the spine tips, looks like it may have been taped at some point so there's som surface abrasion. Ownership inscription. [11970, Hyraxia Books].