This monograph by Max Müller is a classic study of East to West migration of folk stories. He sets it up with a detailed study of the fable known to us as the Milkmaid and the Spilt Milk. This is the same theme expressed by the proverb 'Do not count your chickens before they are hatched.' He traces this all the way back to the Panchatantra, complete with a detailed historical flowchart.