On March 28 and 29, 1969, at the occasion of the dedication of the
European Southern Observatory, some 90 astronomers from all over the
world gathered at the ESO headquarters at Santiago de Chile for
discussing problems of the Magellanic Clouds. They came from Argentina,
Australia, Chile, Mexico, South Mrica and the United States as well as
from Europe; these latter, naturally, mostly from the member states
ofESO. The choice of the subject was an obvious one. When erecting the
European Southern Observatory as a joint effort in European astronomy,
it was agreed from the beginning that the field of research should be
the southern sky, so far hardly explored with large telescopes. Among
the objects to be investigated, the Magellanic Clouds rank highest,
together with the galactic centre region and the southern spiral
structure. Being located ten times closer than the nearest large stellar
systems accessible to northern observers, and containing a stellar
population ranging in age from the oldest down of star formation, the
Clouds provide an ideal laboratory for research on to the stage current
problems in astrophysics. Yet, most of the northern observational
astronomers were hardly acquainted with the Magellanic Clouds;
naturally, they are used to think in terms of research projects that can
be conducted at their observatories. A survey of the status of knowledge
and research on the Clouds therefore appeared in order now that the
first- medium size- telescopes of ESO came into operation.