Scovill's Photo. Series. No. 12. A Manual of Photographic Chemistry, Rev. T. Frederick Hardwich, M.A., Scovill Mfg. Co., (New York, NY), 1886, ~5¾"x8¾", book section: 384pp; catalog section: 38pp
By 1886, Scovill's Photographic Series comprised 20 volumes, sold for $0.25 - $1.00 each, covering a wide array of advanced techniques and science. Each contained a shortened catalog section in the back such as this one, containing mainly cameras.
Scovill's Photographic Series scanned here include: