Each moment I felt increasing upon me that dreadful doubt as to my own identity—as to the continuity of my past and present existence—which is the first sign of that distraction which comes on those who have lost themselves in the bush. I had fought against this feeling hitherto, and had conquered it; but the intense silence and gloom of this rocky wilderness were too much for me, and I felt that my power of collecting myself was beginning to be impaired.
I was becoming________