Perhaps it is the best book on alchemy written in simple language, with formulas for medicines, doses of consumption, and the diseases in which he used his Potable Gold, something that the alchemical corpus lacks, incidentally, more given to fantasy than to help others, as this book intends. Because if something stands out about Agricola, it is that he gives precise notions for his preparations of Potable Gold, because if that were not the case, he tells us, why would he write a book? For personal praise? In its pages you can see the interest in helping others by curing them, and that is why it offers many recipes, highlighting that the best is the one that extracts the tincture of gold in a natural and gentle way, without corrosives, which it strictly rejects. At the same time, he relates the case of a long-lived man who lived for more than 100 years by consuming land overflowing with pulvis solaris that he found in the mountains. Agricola was a globetrotter who always looked for medicines to cure, and he found in Gold the remedy to cure incurable diseases such as cancer, whose recipe he provides in great detail.