An American scientist, caught in Antwerp by the Blitzkrieg, reports on what he saw and heard in Nazi-occupied Belgium from May to October 1940. His story is important, not only because it is one of the very few to come out of the conquered countries, but because of its unemotional and factual nature. Mr. Moën reports, for instance, that none of the Belgians he talked to really believed Belgium "could be fed without a great deal, and perhaps the lion's share, going to their new masters."