There are many editions of the Upanishaḍs 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 Granṭha characters, were in many cases fuller and more intelligible and significant. Hence we adopted for our translation South Indian editions. The edition of the 108 Upanishaḍs which the late Tukaram Tatya of Bombay has published in Ḍevanāgari characters approaches the South Indian edition. As the South Indian edition of the Upanishaḍs is not available for the study of all, I intend to have the recensions of that edition printed in Ḍevanāgari 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.
Transliteration
In the transliteration of Sanscrit letters into the English alphabet certain difficulties present themselves. Let me take first the letter #. There are three letters in Sanscrit #, #, and #. They are differently pronounced and one should not be confounded with another. For the first letter we have the English equivalent S and for the last Sh. But for the second one we
have none whatsoever. The prominent writers in the field of Theosophy have been transliterating this letter into Sh. Hence in writing the word ### they made it Kāshi in the English language. They utter it also in the same manner. To a South Indian ear, it is rather grating. The manṭras especially depend for their efficacy upon proper pronunciation. When we therefore utter the words wrongly, there is committed according to Sanscrit writers, Varṇa-Haṭyā-Ḍosha or the sin of the murder of letters or words. In my translation I have represented the letter # by Ś and not by Sh, since I consider the latter to be a mistake. Other transliterations are:—
It would be well if our leaders of thought conferred together and came to some agreement upon the question of transliteration.
The Order of the Upanishaḍs
The Upanishaḍs translated have been classified under the headings of (1) Veḍānṭa, (2) Physiology, (3) Manṭra, (4) Sannyāsa and (5) Yoga. But these are not hard and fast divisions. For instance in the Sannyāsa and Yoga Upanishaḍs, manṭras also are given. But in the Manṭric Upanishaḍs, Manṭras alone are given.
Veḍānṭa and Yoga Upanishaḍs
The Upanishaḍs that come under the headings of Veḍānṭa and Yoga are the most important. But it is the latter Upanishaḍs that are most occult in their character, since it is they that give clues to the mysterious forces located in nature and man, as well as to the ways by which they maybe conquered. With reference to Veḍānṭa, the ancient teachers thereof have rightly ordained that none has the right to enter upon a study of it, unless he has mastered to a slight degree at least the Sāḍhana-Chaṭushtaya, or four means of salvation. He should not, only be convinced in theory of the fact that Āṭmā