I'm trying to identify a typeface used in an old sci-fi book, 'The Germ Growers', of which I have a PDF scan, freely available from the National Library of Australia. I'm including a raster sample below, which features a distinctive 'Q' and (I hope) a reasonable mix of uppers and lowers:

The print quality or resolution was too poor to get a good result from WhatFontis. Identifont suggested that it's "Escrow", and it's really close... but that didn't exist in 1892. Also, the eye of the 'b' and 'd' is a bit too full and round, and so generally with the miniscules... Escrow is just that much too wide to be a perfect match. A little digging revealed that Escrow referenced Monotype’s 1908 Scotch No. 36, but even that's too late.
The book was printed by J. S. Virtue & Co. of London, in 1892, if that helps.
Raph Levien suggested that it is similar to "Round-face on long-primer body, Farmer Little & Co", p.221 of De Vinne's Plain Printing Types, but noted that my sample has longer descenders. He reflected that that might be, "the biggest clue - most Scotch Roman and "Modern" fonts have fairly short descenders." He referred me to this board.
I'd really appreciate any help or suggestions.