I think it’s Macbeth and macdonwald it’s been a mintue
In "The Snowstorm," Emerson is referring to the winds howling in the sky when he states the metaphor of "the trumpets of the sky."
I would say the main headings and key concepts in a reading assignment would help one to grasp what the topic is basically about ie paying attention to these two things would be an essential part of a study guide so that the main meaning of the writing could be grasped.