Question

what are the two other words that Whitman could have contracted.
like:-learn'd, wander'd, look'd​

Answer 1

shook'd, book'd, wonder'd etc.

Answer 2

Like an artist, the speaker will be interpreting the stars on his own terms, as a ... In line 7, the speaker has emerged outside into the "moist nightair," and the key word in ... it establishes a radically different atmosphere from that of the lecture room. ... contracted "ed" verb, "Look'd," like "wander'd" in line 6 and "learn'd" in line 1, ...