  We have compiled a catalogue of the gas content for a sample of 1916
galaxies, considered to be a fair representation of `normality'. The definition
of 'normal' galaxy adopted in this work implies that we have purposely excluded
from the catalogue galaxies having distorted morphology (such as interaction
bridges, tails or lopsidedness) and/or any signature of peculiar kinematics
(such as polar rings, counterrotating disks or other decoupled components). In
contrast, we have included systems hosting active galactic nuclei (AGN) in the
catalogue. This catalogue revises previous compendia on the ISM content of
galaxies, and compiles data available in the literature from several small
samples of galaxies. Masses for warm dust, atomic and molecular gas, as well as
X-ray luminosities have been converted to a uniform distance scale taken from
the Catalogue of Principal Galaxies (PGC). We have used two different
normalization factors to explore the variation of the gas content along the
Hubble sequence: the blue luminosity and the square of linear diameter. Our
catalogue significantly improves the statistics of previous reference
catalogues and can be used in future studies to define a template ISM content
for 'normal' galaxies along the Hubble sequence. The catalogue can be accessed
on-line at http://dipastro.pd.astro.it/galletta/ismcat/
