Answer:
In the beginning, the narrator feels alone and apart from his new neighbors. Laughing with the other boys over his language mistake breaks down the barrier between him and the others. Once they laugh together, he becomes comfortable being a part of the team. He starts to feel more accepted and hopeful about fitting in as an American.
A monoform or monocline is a horizontal intersection that pass through a 3D model of a graph.
I think they saw nature in a spiritual way as the collective "Over-soul" of all the souls that create and reside in every form in creation. That means that very soul is one with and is the Over-soul, which some call God, but Dickinson and Whitman may have thought that word had to much connections to organized religion which has a different definition than they had.
Choleric should be the answer