Final answer:
In 'A Tale of Two Cities,' it's revealed that Roger Cly's coffin was actually empty as his body was stolen before the grave could be exhumed by body-snatchers.
Step-by-step explanation:
The question "What was buried in Roger Cly's coffin?" appears to be related to the content loaded into Roger Cly's coffin from the story 'A Tale of Two Cities' by Charles Dickens. However, the references provided seem to be about historical burials and not related to the novel.
In Dickens' work, nothing was buried in Roger Cly's coffin as it was revealed to be empty when Jerry Cruncher and his accomplices attempted to exhume the body for sale to a medical school. Jerry Cruncher labels this a case of 'resurrection-man' being tricked, pointing to the practice of body-snatching that was common during that period.