The use of blank verse enjambment intensifies the contemplative ad meditative of the poem. Blank verse allows for freedom of form enhancing the tone of the poem which shifts from being hopeful to being hopeless
the use of enjambment helps hold the readers interest across line: to him in the love of nature holds communion with her visible forms she speaks a various language for her gayer hours
That is because of the many different elements in a salad that work together to perfection and taste great. The analogy is definitely better than the melting pot.