CHAPTER V. THE OUTCOME OF ALCHEMY 81

§ 61. Did the Alchemists achieve the _Magnum Opus_? 81

§ 62. The Testimony of van Helmont 82

§ 63. The Testimony of Helvetius 83

§ 64. Helvetius obtains the Philosopher’s Stone 85

§ 65. Helvetius performs a Transmutation 87

§ 66. Helvetius’s Gold Assayed 88

§ 67. Helvetius’s Gold Further Tested 88

§ 68. The Genesis of Chemistry 89

§ 69. The Degeneracy of Alchemy 90

§ 70. “Count Cagliostro” 91