This is a book published in 1858 by Longley Bros. It’s not for sale but you can view its online details and even download it. It contains over 160 pages, excluding the blank ones that happened to have gotten in there.
It’s pretty amazing such old an book gets shared like this on the net, but I guess there has to be an upside to this virtual world 😉 Enjoy the read!
Link:
Photography Contrastique - Alternative Photographic Processes 