The only one I think would work would be accelerate
There is a subtle factor of Incomprehensiveness, also an inability to recognize his surroundings and appreciate them.
Muir's writing is on both the beauty and harshness of nature. He talks about the beauty of the flower he discovered, but then talks about having to go without supper or blankets and how storms and the harsh weather conditions became welcomed after probably showing up a lot.
Couldn't really find the poem. but a way to find the summary is to read it and find what it is mainly talking about and what words it uses to describe it..