a Sympathy or Antipathy with another, so very singular, as is found in the Magnet with Iron, in Mercury with Gold, in Silver with Copper, a very remarkable Sympathy, but on the contrary, there is a notable Antipathy in Lead against Tin, in Iron against Gold, in Antimony against Silver, in Lead against Mercury. Infinite other like Sympathetic, and Antipathetick Annotations occurr in the Animal & Vegetable Kingdom; as you may read and find in various Authors, who have written of such Curiosities, from the accurate, and absolute Knowledge of which, the true Philosophers, and Masters of Nature had their beginning, and Esteem. Thus have I described, what I my self have seen and done; and have caused the same to be printed for you, Candid Readers, out of mere Liberality, gratis communicating it, according to that of Seneca: I desire in this to know somewhat, that I may teach others. Si cum hac Exceptione detur Sapientia, ut illlam inclusam tencam, abjiciam, &c. But if any man doubt of the real truth of this matter, let him only with a lively faith believe in his Crucified Jesus, that in Him, he (by the strict way of Regeneration) may become a New Creature; in the same let him fix the whole Anchor, of his Faith, and likewise shew his [Greek: philanthropia], or Love of Mankind, unto all his Neighbours, and especially exercise the works of Mercy, and Brotherly Love towards the needy Members of the Christian Religion, that at length, when the whole Course of his Life is justly, and holily finished, in that Fatal and Mortal hour, he may hence, through the Watery Ocean of this Tempestuous and Rocky World, arrive in safety at the most blessed Port of Eternal Rest, and sing the New Song with the Triumphing Philosophers of the Heavenly Jerusalem, of which he hopes to take, who is, Your most faithful and assured Friend John Frederick Helvetius, Doctor and Practitioner of Medicine at the Hague. * * * * * Transcriber's note: Repeated word "perused" deleted.