Answer:
In <em>The Calypso Borealis</em>, Muir describes his emotional experience upon seeing a flower named the Calypso Borealis. The speaker of the poem was sad for some reason, and in that moment of hopelessness, he saw <em>“beautiful Calypso on the mossy bank of a stream.”</em>
It is easy to see that Muir has a rather positive attitude towards nature. Nature brightens up his mood, and he expresses admiration for it. He also admires the flower for its beauty, but also for its adventure and survival despite all the hardships. The positive tone is seen in the following excerpts:
<em>"botanising in glorious freedom";</em>
<em>"rejoicing in their bound wealth and strength and beauty"</em>
The very choice of words (<em>glorious, freedom, rejoicing, wealth, beauty) </em>suggests that nature brings him joy and makes him happy.