Today’s encoding method brought to you by…a book

In Jules Verne book Journey to the Center of the Earth(wikipedia, project gutenburg) the protaganists find an ‘encrypted’ message from a finctional scientist Arne Saknussemm.

The message isn’t really encrypted but encoded using the following encoding/decoding scheme:

Translate message to Latin
Write it backwards
Apply Hardwigg transform (more on that later)
Translate characters to Runic (again, more later)

And there you go…