The sentence in question is this one:
"He wanted, of course, to imagine the dark, savage way of life, to get it all off pat in his head. He wanted to know as the Indians and savages know, darkly, and in terms of otherness" - D. H. Lawrence, "Hector St John de Crevecoeur", Studies in Classic American Literature.
It seems that D. H. Lawrence's meaning of "otherness" is not the same as this https://en.wikipedia.org/wiki/Other_(philosophy)
Am I right? What can be possible, more appropriate meaning of "otherness", and "in terms of otherness"?