Note 913 — Chapter IX · THE IDEA OF SPIRITS AND GODS
Joseph Ward Swain translation
As the magician can either cause or cure sickness, we sometimes find, besides these magical spirits whose function is to do evil, others who forestall or neutralize the evil influence of the former. Cases of this sort will be found in Nor. Tr., pp. 501-502. The fact that the latter are magic just as much as the former is well shown by the fact that the two have the same name, among the Arunta. So they are different aspects of a single magic power.