  We report new results of our search for rare, cool carbon stars located at
large distances from the galactic plane. Eighteen new C stars were discovered.
Six are remarkable by showing the two peculiarities of a strong infrared excess
at 12 microns and a large height above the Galactic plane, from 1.7 to 6 kpc.
The number of C stars with these properties has been increased to 16. Mass-loss
rates were tentatively estimated by assuming that all these 16 stars are Miras
and by using the correlation between Mdot and the K-12 colour index. It is
found that several stars have large mass loss, with median Mdot around 4E-06
solar mass per year. It would be desirable to detect their CO emission ...
Eight stars might be at more than 30 kpc from the Sun, and two at the
unprecedented distance of 150 kpc (this abstract has been abridged).
