Bibliotics; or, The study of documents; determination of the individual character of handwriting and detection of fraud and forgery. New methods of research (1901)
Frazer, Persifor, 1844-1909 · Philadelphia : Lippincott · leaf 277
peration was the illumination ofthe paper and the mark. This was accomplished by using a Beckilluminator, the principle of which is here shown. A beam oflight, L, is admitted through a side opening and strikes a circulardisk, C (microscope slide cover-glass), set obliquely, as shown. Aportion of… … ^ \^/ c. Extracts from a paper on THE IDENTIFICATION OF COLORED INKS BY THEIR AB-SORPTION SPECTRA.^ BY DR. CHARLES A. DOREMUS. The substitution of aniline dyes for other coloring matters in thepreparation of colored inks, especially red, necessitates the adoptionof means for their recognition. A…
Writing -- Identification · Forgery · Graphology
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