What does the crowd say they saw on the breast of Dimmesdale? The Scarlet Letter

From the text:

"Most of the spectators testified to having seen, on the breast of the unhappy minister, a scarlet letter—the very semblance of that worn by Hester Prynne—imprinted in the flesh."

"Others contended that the stigma had not been produced until a long time subsequent, when old Roger Chillingworth, being a potent necromancer, had caused it to appear, through the agency of magic and poisonous drugs."

"Others, again—and those best able to appreciate the minister’s peculiar sensibility, and the wonderful operation of his spirit upon the body,—whispered their belief, that the awful symbol was the effect of the ever active tooth of remorse, gnawing from the inmost heart outwardly, and at last manifesting Heaven’s dreadful judgment by the visible presence of the letter. "