"Itch of the haydust..."

"Itch of the haydust in the sweaty shirt and shoes." In this part of the peom by the poet " Gary Snyber" uses the word itch and explains how the haydust and sweat itchs. To kind of make us imagine what he means. What it adds to the poem is to make it more understandable. Some people easily understand by reading, but there are people who need more than one sense of them involved in order to understand something more.