Another phase of religious belief in Upper Guinea is ancestry worship, which has here been developed to a degree unknown elsewhere. As the departed have to be maintained in the same social position beyond the grave that they enjoyed in this world, they must be supplied with slaves, wives, and attendants, each according to his rank. Hence the institution of the so-called "customs," or anniversary feasts of the dead, accompanied by the sacrifice of human victims, regulated at first by the status and afterwards by the whim and caprice of chiefs and kings. In the capitals of the more powerful states, Ashanti, Dahomey, Benin, the scenes witnessed at these sanguinary rites rivalled in horror those held in honour of the Aztec gods. Details may here be dispensed with on a repulsive subject, ample accounts of which are accessible from many sources to the general reader. In any case these atrocities teach no lesson, except that most religions have waded through blood to better things, unless arrested in mid-stream by the intervention of higher powers, as happily in Upper Guinea, where the human shambles of Kumassi, Abomeh, Benin and most other places have now been swept away. On the capture of Benin by the English in 1897 a rare and unexpected prize fell into the hands of ethnologists. Here was found a large assortment of carved ivories, woodwork, and especially a series of about 300 bronze and brass plates or panels with figures of natives and Europeans, armed and in armour, in full relief, all cast by the _cire perdue_ process[166], some barbaric, others, and especially a head in the round of a young negress, showing high artistic skill. Many of these remarkable objects are in the British Museum, where they have been studied by C. H. Read and O. M. Dalton[167], who are evidently right in assigning the better class to the sixteenth century, and to the aid, if not the hand, of some Portuguese artificers in the service of the King of Benin. They add that "casting of an inferior kind continues down to the present time," and it may here be mentioned that armour has long been and is still worn by the cavalry, and even their horses, in the Muhammadan states of Central Sudan. "The chiefs (_Kashellawa_) who serve as officers under the Sultan [of Bornu] and act as his bodyguard wear jackets of chain armour and cuirasses of coats of mail[168]." It is clear that metal casting in a large way has long been practised by the semi-civilised peoples of Sudan.