Alchemical Catechism - Unknown - A short catechism of alchemy, in question and answer format. Alchemy is an ancient branch of natural philosophy that attempts to purify and perfect certain materials. This short work asks and answers questions such as what is the main study of a philosopher, the definition of nature, what materials can the philosopher use, what connections the planets have with alchemy, precautions that one should take before participating in alchemical activites, and much more.