Descartes

Level 4 of the Dungeon
(0, 0, D:4)
  an adder corpse
(22, 0, D:4)
  17 bolts

Level 5 of the Dungeon
(0, 0, D:5)
  22 stones
(10, 21, D:5)
  a book of Frost
(12, 24, D:5)
  a scroll of enchant weapon