What was the El Amrah stone made of? disputed

Positions

1. Calcium phosphate and uric acid

   The EAU History Office gives a mixed stone of calcium phosphate and uric acid.

   Sources

   1. EAU History Office: Cutting for the Stone Museum or society

2. Pure uric acid

   BAUS calls it a pure uric acid stone and links it to a high-protein diet.

   Sources

   1. BAUS Virtual Museum: Ancient Egypt Museum or society

Evidence

Shattock's 1905 description in the Transactions of the Pathological Society of London is the likely original source, but its text was not read for the film. The stone was destroyed in 1941, so it cannot be analysed again.

Current standing

Unresolved on the sources read. The film does not state a composition.

All sources