About ten years ago the first publications appeared on the use of the Scanning Electron Microscope (hereafter abbreviated SEM) for research on radulae (Runham & Thornton, 1967; Thompson & Hinton, 1968). This instrument has now proved to be an eminent tool and the method as such is becoming more and more a routine procedure for many malacologists. Prior to viewing the specimens with a SEM, the preparation procedure is an essential step. Data on this procedure have been given briefly in most publications dealing with the SEM-method for radulae. The only survey of methods of preparation has been given by Solem (1972).