GALEN ON THE MIXTURES AND POWERS OF SIMPLE MEDICINES, BOOK 7. The Greek heading identifies this as Book 8 (Η), but the Latin and the standard arrangement of this edition label it as Book 7.

Chartier Edition, Vol. 13, [181.]

Basel Edition, Vol. 2, (86.)

Preface. As I begin to write this seventh commentary on the powers of simple medicines Medicines consisting of a single natural ingredient, such as a specific herb, mineral, or animal product, rather than a complex compound., I consider it necessary to state beforehand that this work will be clear and plain only to those who have engaged with the previous books diligently and not in a distracted or superficial manner. I believe that others will misunderstand rather than learn anything from what is said here. They will deceive themselves and perhaps even find fault with us, as if we were not...