[Grenard says (II. p. 256) the most powerful and most feared of sorcerers
[in Chinese Turkestan] is the _djduger_, who, to produce rain or fine
weather, uses a jade stone, given by Noah to Japhet. Grenard adds (II.
406-407) there are sorcerers (Ngag-pa-snags-pa) whose specialty is to make
rain fall; they are similar to the Turkish _Yadachi_ and like […]