Hi pawel110,
yes I am familiar with Dr Russell Thacker Tralls address to the Smithsonian Institute to an audience of his medical peers and the challenge he offered to the leading Professor of Medicine at the time, which was ignored by the way, but there is no mention of any treatment for mercury poisoning by him in any Hygienic way that I am aware of.
Dr Trall was of the Hygienic School or "Hygieo Therapy", which combined the use of all Hygienic agents into one wholistic system of health care & recovery. As a point of interest he commented that the majority of medical doctrines of his day were, in his own words: "the incoherent expression of incoherent ideas"; he was without doubt the leading & most brilliant Hygienist of his time.
I do have a rare edition of Tralls' "Handbook of Hygienic Practice" so if I find any mention of this in there, I shall post on it.