Forty Centuries of Ink / Or, A chronological narrative concerning ink and its backgrounds, introducing incidental observations and deductions, parallels of time and color phenomena, bibliography, chemistry, poetical effusions, citations, anecdotes and curiosa together with some evidence respecting the evanescent character of most inks of to-day and an epitome of chemico-legal ink.

The work surveys the development of writing inks from antiquity to the modern era, combining historical narrative, chemical explanation, practical recipes, and bibliographical and anecdotal material. It examines ancient ink materials and methods, changing ink utensils and writing supports, classifications and manufacturing, the rise of industrial aniline and coal-tar dyes and their fugitive qualities, and the legal, forensic, and conservation issues surrounding ink analysis, fraud, and document preservation. Chapters include chemical tests, case studies, industry history, and guidance for evaluating ink permanence and restoring or distinguishing altered texts.