'Thither we came and beached our ship, and took out the sheep, and ourselves went beside the stream of Oceanus until we came to the place of which Circe had told us.
'Here Perimedes and Eurylochus held the victims, while I drew my sharp sword from beside my thigh, and dug a pit of a cubit's length this way and that, and around it poured a libation to all the dead, first with milk and honey, thereafter with sweet wine, and in the third place with water, and I sprinkled thereon white barley meal. And I earnestly entreated the powerless heads of the dead, vowing that when I came to Ithaca I would sacrifice in my halls a barren heifer, the best I had, and pile the altar with goodly gifts, and to Teiresias alone would sacrifice separately a ram, wholly black, the goodliest of my flocks. But when with vows and prayers I had made supplication to the tribes of the dead, I took the sheep and cut their throats over the pit, and the dark blood ran forth. Then there gathered from out of Erebus the spirits of those that are dead, brides, and unwedded youths, and toil-worn old men, and tender maidens with hearts yet new to sorrow, and many, too, that had been wounded with bronze-tipped spears, men slain in fight, wearing their blood-stained armour. These came thronging in crowds about the pit from every side, with a wondrous cry, and pale fear seized me. Then I called to my comrades and bade them flay and burn the sheep that lay there slain with the pitiless bronze, and to make prayers to the gods, to mighty Hades and dread Persephone. And I myself drew my sharp sword from beside my thigh and sat there, and would not suffer the powerless heads of the dead to draw near to the blood until I had enquired of Teiresias.'
what is odysseus doing in this pashage?