  In an analysis of the IRAS 1.2 Jy redshift catalogue, with emphasis on the
separate examination of northern and southern parts (in galactic coordinates),
we found that the clustering of galaxies differs significantly between north
and south, showing fluctuations in the clustering properties at least on scales
of 100 Mpc/h (Kerscher et al. 1997, astro-ph/9704028). We give a brief
description of our morphological method which is based on Minkowski functionals
and show the results obtained from the IRAS 1.2 Jy galaxy catalogue. We discuss
several error estimates and select different subsamples from the 1.2 Jy
catalogue according to flux and colour and validate the results for the whole
sample. Furthermore we look closer at the spatial origin of the fluctuation and
we compare with optically selected galaxies from the CfA1 survey.
