How does E. B. White use imagery in The Trumpet of the Swan?

Imagery:

"Some of his notes are like jewels held up to the light. The emotion he transmits is clean and pure and sustained."

The storekeeper pointed a gun at me and fired. I felt an agonizing pain in my left shoulder—which I've always considered the more beautiful of my two shoulders. "Blood gushed from my wound in torrents, and I sank gracefully to the sidewalk, where I handed over the money and thus regained by honor and my decency. I was at death's door. A great multitude of people gathered. Blood was everywhere. I became faint and passed out with dignity in front of all. The police arrived—dozens of them. Game wardens flocked to the scene in great numbers, and there was a tremendous argument about the money.'"