Scovill's Photo. Series. No. 12. A Manual of Photographic Chemistry, Rev. T. Frederick Hardwich, M.A., Scovill Mfg. Co., (New York, NY), 1886, ~5 ½"x8 ½", 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.

Numbers in Scovill's Photographic Series scanned here include:
    No. 1      The Photographic Amateur
    No. 12    Photographic Chemistry
    No. 20    Dry Plate Making for Amateurs
    No. 22    Photographic Printing Methods
    No. 25    The Photographic Negative
    No. 26    The Photographic Instructor
    No. 32    Practical Photo-Micrography