An electrochemical method, based on the anodic oxidation and/or protol
ysis of oxalate and phosphate ions, uric acid and cystine, has been de
veloped with the aim of extending it to the dissolution of urinary sto
nes in situ. The experiments in vitro have proved that the ''Electroli
tolysis'', i.e. the dissolution of stones, takes place rapidly in the
case they consist of phosphate, less rapidly if they are composed of u
ric acid, and more slowly if oxalate and cystine are their constituent
s. In any case the velocity cf the anodic reaction is never negligible
and opens the possibility of realising an alternative method of undub
ious value for the treatment of urinary stones.