COLOGNE.- Even today, the world of the ancient Greek gods has lost none of its fascination. Accounts of the deeds of mighty Zeus, his jealous wife Hera, the twins Apollo and Artemis, beautiful Aph-rodite, and Dionysos the god of wine, are as enthralling as ever after more than 2000 years. Greek poets and artists conveyed a vivid picture of the world of these gods. Their work set creative precedents and were a source of inspiration; they also furnished models and a stim-ulus for new interpretations and original compositions by Roman writers and sculptors. Over a period of more than three hundred years, the Brandenburg-Prussian Electors and Kings in Berlin collected antique works of art, which are now in the museums of