Volume 1 #1 was the September 1994 issue, and it had 36 pages full of announcements and short news articles. In for the ICOM Committee for Conservation 10th triennial meeting, Washington, DC, 22-27 Aug. Samples aged under different conditions, but with similar color change, have different proportions of soluble colored material. Mc Crone used it to analyze the Shroud of Turin and the Vinland Map, showing the first to be a 14th-century painting and the second to be a 20th-century forgery. (1D1) , postprints of the one-day meeting held at the Liverpool Museum on May 14, 1993. (1F) is the National Archives' professional-looking new publication, replacing the quarterly "News From the Archives." It will appear in September, November, January, March and May--five times a year. (3A5) "El Libro y su Estructura en el Tiempo: Cuatro Ensayos" (The Book and its Structure in Time: Four Essays), by Gary Frost. Commentary, selection and translation by Lourdes Blanco. When that issue had to be reprinted, he took the occasion to revise the article, but because very few copies of that back issue have been sold, few English-speaking readers have ever seen it. (3B1.23) "Changes in Paper Color due to Artificial Aging and the Effects of Washing on Color Removal," by Timothy Vitale and David Erhardt. Samples with the greatest color change had the lowest percentage of color removed by washing. Since the mid-20th century, however, it has been upstaged though not superseded by the electron microscope and other high-technology instruments.Three of the inks did not match any of the specimens on record; one of these inks was similar to an ink from an identical brand of pen that was in the database, but had a modified formulation.
Many attempts have been made to determine the age of ink in the last 30 years.
Different techniques have been used, based on the study of chemical and physical properties of various types of inks.
Success depends on many factors, such as the volume of the questioned writing, the volume of the exemplar writing and its closeness in date to the questioned writing, and the conditions under which the questioned and exemplar writings were written.
These features of genuine writing and forged writing help examiners answer Questions 1 and 2 that follow.
Utilizing a database of standards for forensic casework is a valuable resource.