The Legend about how the Khasis lost their script

There once was a great flood where a Khasi and a Bengalee were to cross over by swimming to save themselves. The Bengalee tied his bundle of books on his head and started swimming. The Khasi held his books in his mouth by biting on them. While swimming a huge wave swept over them and while overcoming it the Khasi who gasped for breath accidentally swallowed his books. The books thus got digested and all his knowledge got stored in his head. However, the Khasi could not remember his scripts and thus lost his scripts