CHAPTER XX.
DOWN THE VOLGA AGAIN.--RUSSIAN RECEPTION CEREMONY.--SIMBIRSK, SAMARA, AND SARATOV.--GERMAN SETTLERS ON THE VOLGA.--DON COSSACKS.--ASTRACHAN.--CURIOUS POPULATION.--VOYAGE ON THE CASPIAN SEA.--THE CASPIAN PETROLEUM REGION.--TANK-STEAMERS.--INTERESTING FACTS AND FIGURES OF THE NEW PETROLIA.--PRESENT PRODUCT OF THE BAKU OIL-FIELDS.--EXCURSION TO BALAKHANI, AND VISIT TO THE OIL-WELLS.--TEMPLES OF THE FIRE-WORSHIPPERS.--ANTIQUITY OF THE CASPIAN PETROLEUM REGION.--MARCO POLO AND OTHER AUTHORITIES. 403