There are many editions of the Upanishads to be found in Calcutta, Bombay, Poona, South India and other places. But we found that the South Indian editions, which were nearly the same in Telugu or Grantha characters, were in many cases ful ler and more intelligible and significant. Hence we adopted for our translation South Indian editions. The edition of the 108 Upanishads which the late Tukaram Tatya of Bombay has pub lished in Devanagari characters approaches the South Indian edition. As the South Indian edition of the Upanishads is not available for the study of all, I intend to have the recensions of that edition printed in Devanagari characters, so that even those that have a little knowledge of Sanscrit may be able to' follow the original with the help of this translation.