We regret that by each leaving all his knowledge to "his good angel and himself," it has happened that "the good angels" have kept it all to themselves! It cannot, however, be denied, that if they could not always extract gold out of lead, they sometimes succeeded in washing away the pimples on ladies' faces, notwithstanding that Sir Kenelm Digby poisoned his most beautiful lady, because, as Sancho would have said, he was one of those who would "have his bread whiter than the finest wheaten." Van Helmont, who could not succeed in discovering the true elixir of life, however hit on the spirit of hartshorn, which for a good while he considered was the wonderful elixir itself, restoring to life persons who seemed to have lost it. And though this delightful enthusiast could not raise a ghost, yet he thought he had; for he raised something aerial from spa-water, which mistaking for a ghost, he gave it that very name; a name which we still retain in _gas_, from the German _geist_, or ghost! Paracelsus carried the tiny spirits about him in the hilt of his great sword! Having first discovered the qualities of laudanum, this illustrious quack made use of it as an universal remedy, and distributed it in the form of pills, which he carried in the basket-hilt of his sword; the operations he performed were as rapid as they seemed magical. Doubtless we have lost some inconceivable secrets by some unexpected occurrences, which the secret itself it would seem ought to have prevented taking place. When a philosopher had discovered the art of prolonging life to an indefinite period, it is most provoking to find that he should have allowed himself to die at an early age! We have a very authentic history from Sir Kenelm Digby himself, that when he went in disguise to visit Descartes at his retirement at Egmond, lamenting the brevity of life, which hindered philosophers getting on in their studies, the French philosopher assured him that "he had considered that matter; to render a man immortal was what he could not promise, but that he was very sure it was possible to lengthen out his life to the period of the patriarchs." And when his death was announced to the world, the Abbe Picot, an ardent disciple, for a long time would not believe it possible; and at length insisted, that if it had occurred, it must have been owing to some mistake of the philosopher's. The late Holcroft, Loutherbourg, and Cosway, imagined that they should escape the vulgar era of scriptural life by reorganizing their old bones, and moistening their dry marrow; their new principles of vitality were supposed by them to be found in the powers of the mind; this seemed more reasonable, but proved to be as little efficacious as those other philosophers, who imagine they have detected the hidden principle of life in the eels frisking in vinegar, and allude to "the bookbinder who creates the book-worm!"