bold = Main text
   Vol.,  Sect., Part, Chap., Par.                                         grey = Comment text

 1        I, Translat                |         readable translation of the principal Sacred Books of the Eastern
 2        I, Translat                |           that a translation of the principal Sacred Books of the East
 3        I, Translat                |          our Series, as well as the principal Upanishads, theosophic treatises
 4        I, Intro,    0,   0,   2   |            by the Upanishads or the principal parts of the Vedas and also
 5        I, Intro,    0,   0,   5   | commentators, who probably knew the principal Upanishads by heart, should
 6        I, Intro,    0,   0,   7   |              Translation of Several Principal Books, Passages, and Texts
 7        I, Intro,    0,   0,   9   |             Translations of Several Principal Books, Passages, and Texts
 8        I, Intro,    0,   0,   9   |           Mahâvrata forms again the principal subject, treated, however,
 9        I,   1,    1,   0,   2     |           this translation from The Principal Upanishads, S. Radhakrishnan
10        I,   1,    3,   0,   6     |            each have itself for its principal ingredient, besides an admixture
11        I,   3,    2,   1,   1     |            Devas), illuminating the principal and intermediate quarters
12        I,   3,    2,   1,   1     |             says: 'Illuminating the principal and intermediate,' because
13        I,   3,    2,   1,   1     |         illuminates these only, the principal and intermediate quarters
14       XV, Intro                   |    completes the translation of the principal Upanishads to which Sankara
15       XV, Intro                   |            Khândogya-upanishad, the principal subject of the whole chapter
16       XV,   6                     |        Upanishad as the name of the principal teacher.~Sankara, in the
17       XV,   7                     |            Upanishad of Maitrî, the principal teacher.~In a MS. which