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 proper and unbiassed witnesses with the object of proving that the compound was truly a solution of gold. The challenge appears to have been accepted, and the Master of the Mint, Baron Thomas Knivet, and other experts were present when the test was made. According to Gwynne the result was failure, but I do not find any unprejudiced report of the experiment.

The writer of the life of Anthony in the old "Biographia Britannica," who is his warm partisan, gives what he declares to have been the genuine formula for the aurum potabile. It had long been in the possession of Anthony's descendants, he says, and was given to him (the author of the biography) by an eminent chemist. If this is true it is evident that a solution of gold would not have resulted from the process.

This is what the alleged Anthony's manuscript prescribes:—The object, Anthony says, is to so far open the gold that its sulphur may become active. To open it a liquor and a salt are required, these together forming the menstruum. The liquor was 3 pints of red wine vinegar distilled from a gallon; the salt was block tin burnt to ashes in an iron pan; these to be mixed and distilled again and again. Take one ounce of filed gold, and heat it in a crucible with white salt; take it out and grind the mixture; heat again; wash with water until no taste of salt is left; mix this with the menstruum, one ounce to the pint, digest, and evaporate to the consistence of honey. The Aurum Potabile was made by dissolving this in spirit of wine.

Whatever may have been the opinion of the experts who watched Anthony make his Aurum Potabile, the sale of the panacea was not destroyed, perhaps not