Then I felt I was fainting. But a terrible dread of lying helpless in that remote and awful twilight sustained me while I clambered upon the saddle. (11.12)
Here we get another example of fear motivating the Time Traveller and helping him get out of a bad experience. This is perhaps the final example in the book of fear, and it's a positive one. We may not like feeling afraid, but it can be a useful emotion.