Read it through once

“Even in the graveyard here at hand,” answered the physician, continuing his employment. “They are new to me. I found them growing on a grave, which bore no tombstone, nor other memorial of the dead man, save these ugly weeds, that have taken upon themselves to keep him in remembrance. They grew out of his heart, and typify, it may be, some hideous secret that was buried with him, and which he had done better to confess during his lifetime.”