ON CONCORD

Fernel, Book 5, Method of Healing, in the preface. Fernel will reply: "Many things are thought to be beneficial because of their taste, or at least not harmful, which I have often seen—through hidden powers to be known by observation alone—precipitate miserable people into the greatest ruin and death, some being ingested and others only applied." I wish that those who waste their whole lives learning the nomenclatures of plants would diligently apply their effort to testing them. Thus Fernel. Since these things are so, it is clear that much labor and much study must be placed in the observation and notation of all signs, without which the double anatomy cannot be known. But in what way, you will ask, will so many and so diverse signs be noted? Indeed, one must follow that way which we handed down in the latter book of the Prior Analytics, in that chapter which is On the Physiognomic Syllogism. Nor is one or another sign alone to be gathered: but