How do the boldface headings develop the ideas in this article? they show which subtopics are most important. they introduce the topic of each section. they provide a brief timeline of edison's visit. they provide links between the ideas in different sections.

Seven pleiades entranced in heaven, form in the deep another seven: endymion nodding from above sees in the sea a second love. how do the ideas in the excerpt compare to poe’s ideas in "the poetic principle"? this celebration of love offers the “lessons of truth” that poe encourages. this scientific reference relates to the “precepts of duty” that poe praises. this reflection of the night sky offers a “contemplation of the beautiful” that poe encourages. this image of heaven encourages the “incitements of passion” that poe praises.