X-Ray Study of Cigarette Structure

From an investigation of a variety of methods for visualisation of the shred structure in a cigarette, it has been shown that two optical and one x-radiographic method produce useful information. It is concluded that the x-radiographic method, especially by the use of stereo views, provides the most information; it is a convenient and easily utilized method. Examination of a limited number of commercial cigarettes did not show any recognizable structural differences beyond fluctuations in rod density. Novel structures utilizing low-density materials can be readily distinguished.