{15} For a true estimate of Paracelsus you must read "Fur Philippus Aureolus Theophrarstus von Hohenheim," by that great German physician and savant, Professor Marx, of Gottiingen; also a valuable article founded on Dr. Marx's views in the "Nouveau Biographie Universelle;" and also--which is within the reach of all--Professor Maurice's article on Paracelsus in Vol. II. of his history of "Moral and Metaphysical Philosophy." But the best key to Paracelsus is to be found in his own works. {16} So says Dr. Irving, writing in 1817. I have, however, tried in vain to get a sight of this book. I need not tell Scotch scholars how much I am indebted throughout this article to Mr. David Irving's erudite second edition of Buchanan's Life. {17} From the quaint old translation of 1721, by "A Person of Honour of the Kingdom of Scotland."