  We investigate recent claims that the Hubble sequence of spiral galaxies is
scale-free. Fundamental to this investigation is the fact that within the
photometric data of 86 spiral galaxies from de Jong & van der Kruit - from
which these claims were made - a trend exists between morphological type and
bulge profile shape. While late-type spiral bulges are described by an
exponential luminosity profile, the early-type spiral bulges are better
described by an r^{1/2} or r^{1/4} law. Taking the scale-lengths from the
best-fitting surface brightness profile models (i.e. either using exponential,
r^{1/2}, or r^{1/4} law profile parameters), we show that in all six passbands
used (BVRIHK) the early-type spirals have a larger r_e/h ratio than late-type
spiral galaxies. In contrast to this, fitting an exponential profile to the
bulges of all spirals results in the mean r_e/h ratio for the early-type spiral
galaxies actually being smaller than the mean r_e/h ratio for the late-type
spiral galaxies (at the 3-sigma significance level using K-band data).
