  We extend the MOND analysis to a sample of 17 high surface brightness,
early-type disc galaxies with rotation curves derived from a combination of
21cm HI line observations and optical spectroscopic data. A number of these
galaxies have asymptotic rotation velocities between 250 and 350 km/s making
them among the most massive systems (in terms of baryonic mass) considered in
the context of MOND. We find that the general MOND prediction for such galaxies
-- a rotation curve which gradually declines to the asymptotic value -- is
confirmed, and in most cases the MOND rotation curve, determined from the mean
radial light and gas distribution, agrees in detail with the observed rotation
curve. In the few cases where MOND appears not to work well, the discrepancies
can generally be understood in terms of various observational errors -- such as
incorrect orientation angles and/or distances -- or of unmodelled physical
effects -- such as non-circular motions. The implied mass-to-light ratios for
the stellar disc and bulge constrain the MOND interpolating function; the form
recently suggested by Zhao & Famaey (2005) yields more sensible values than the
one traditionally used in MOND determinations of galaxy rotation curves.
