Professor Sayce states that the Rukh figures much-not only in Chinese folk-lore-but also in the old, Babylonian literature.
"The Itinerary of Benjamin of Tudela"
Benjamin of Tudela
They are a development from one of his own tales, 'In the Rukh,' included at first in 'Many Inventions,' and now transferred to its proper place at the end of the book in which the adventures of Mowgli are recorded.
"Inquiries and Opinions"
Brander Matthews