KarlmarkErikDr., Scientific Assistant of the National Central Bureau of the Swedish State Police at Stockholm deals with the scientific principles involved in this method in his publication “Praktische, verwendbare Methoden zur (a) Untersuchung von Spuren in trockenem, fienem sand; (b) Abgiessung von Spuren in Schnee.”Ljungs Verlag, Stockholm, 1938.
2.
Plastico Moulage and Posmoulage are manufactured only by the California Art Supply Co., Palo Alto, California.
3.
Stents Composition and Paribar are manufactured by the Amalgamated Dental Co. Ltd., 7 Swallow Street, Piccadilly, London, W.I.
4.
Zelex is also manufactured and supplied by the Amalgamated Dental Co. Ltd.
5.
See also “The Individuality of Tool Marks,” by MoritzAllan R.Professor, M.D., Forensic Science CircularsNo. 5, March 1939.
