Abstract
A thin section of a fibre system in space is its subset located between two parallel planes The orthogonal projection of a thin section of a statinary spatial fibre process produces a stationary planar fibre jprocess.Its intensity as a function of direction of the section is refered to as rose of sections. With its intensities and the distributions of directions of both the processes can be calculated one from the others. This paper follows the ideas of MECKE/SOTOYAN und MECKE/ NAGEL