====== octave ======
//[[https://hyperlogos.info/ouspensky/ism/|In Search of the Miracolous]]//

<tabbox octave>
{{url>https://hyperlogos.info/ouspensky/ism/c803.htm#OCTAVE}}
<tabbox octaves>
{{url>https://hyperlogos.info/ouspensky/ism/c804.htm#OCTAVES}}
</tabbox>