1. 1J. Guey , Rev. Num.1962 , 73 -128 .
2. 2The corroded part presents the aspect of the more external region visible on fig. 2, but it reaches a more important part and the region of pure oxidation disappears almost completely.
3. 3The remarks previously made concerning the identity of the internal composition in the unattacked part and the original composition are also valid here.
4. ARCHAEOLOGICAL APPLICATIONS OF THE ELECTRON PROBE MICROANALYSER
5. 5The loss of 1/10 of the copper would result in a percentage of silver of 50% and 74%.