"When Shelley's corpse washed ashore, a friend identified
it by a copy of Keats's 1820 volume in the coat pocket, which he knew
Shelley had taken with him. Then, after cremation in which Shelley's
heart, hardened by calcium, did not burn, this same friend snatched it
from the embers and presented it to Mary Shelley, who kept it thereafter
in her desk, wrapped in a copy of 'Adonais."