On which day was Napoleon III's second lithotrity? disputed

Positions

1. 7 January 1873

   Plarr's Lives: Thompson operated on 2 January and again on 7 January.

   Sources

   1. Plarr's Lives of the Fellows (RCS): Sir Henry Thompson Museum or society

2. 6 January 1873

   The EAU History Office biography of Thompson gives 6 January.

   Sources

   1. EAU History Office: Sir Henry Thompson Museum or society

Evidence

Both sources agree on two sittings under chloroform in January 1873 and on death before the third, planned for 9 January.

Current standing

Unresolved by one day. The film says only that he was twice operated upon in January 1873.

All sources