I have. They are an excellent introduction to Alchemy. A bit dry in its presentation but the information is there.
The performance of alchemy is solely dependent on ones understanding of alchemy, and ones understanding of alchemy grows with his spiritual evolution and his spiritual state evolves as his understanding of alchemy does also. Alchemy is one of the 4 paths in Theurgy, and the performance of alchemy evolves the alchemist, it's why alchemists have been able to downright tell Kings how to turn lead into gold step by step, first showing that it can be done, but yet Kings have never been able to do it themselves, it is not a matter of chemistry. The philosophers stone is solidified mercury, in it's natural form mercury is deadly poison, but in it's perfected form (that's what alchemy is, turning a plant/stone/metal into it's perfect form) it grants physical immortality and cures all disease. All alchemical operations can be applied internally for the evolution of the man into his perfect form, that of God. And that is about as much as I know about alchemy
Here is a good one. Amazon.com: Real Alchemy: A Primer of Practical Alchemy (9780892541508): Robert Allen Bartlett, Dennis William Hauck: Books I have found alchemy to be the most difficult of the occult sciences. Good luck!
