Mrs. Charlotte Brown has collaborated with Professor Kirk on several articles that have appeared in this Journal. She is member of the staff at the School of Criminology, University of California. Professor Paul L. Kirk, School of Criminology, University of California, has been a frequent contributor to this Journal during the past years. This paper is his second dealing with advance methods in the identification of writing inks. His early paper on this subject appeared in the September-October issue and dealt with the identification of ball point pen inks.