  Chemically peculiar stars in the magnetic sequence can show the same isotopic
anomaly in calcium previously discovered for mercury-manganese stars in the
non-magnetic sequence. In extreme cases, the dominant isotope is the exotic
48^Ca. Measurements of Ca II lines arising from 3d-4p transitions reveal the
anomaly by showing shifts up to 0.2 AA for the extreme cases - too large to be
measurement errors. We report measurements of miscellaneous objects, including
two metal-poor stars, two apparently normal F-stars, an Am-star, and the N-star
U Ant. Demonstrable anomalies are apparent only for the Ap stars. The largest
shifts are found in rapidly oscillating Ap stars and in one weakly magnetic Ap
star, HD 133792. We note the possible relevance of these shifts for the GAIA
mission.
