Through the centuries, Gypsies all over the world have been misunderstood, maligned, rejected. Outcasts of the countries in which they live, they have wandered for centuries over the face of the earth. They have no homeland, no political unity, no recognition among nations. They have been alone, sundered, shunned, persecuted and banished. Until about a century ago, their original home had been a matter of dispute. Their language had been a source of puzzlement. Yet their conduct and their traditions, their feeling for music, dance and song, have all been acclaimed. Still they were not accepted and were forced to remain apart from conventional society.   Here is their epic history, with its folktales and beliefs, its rites and customs. Here is the vast treasury of the Gypsies.