Title: In Aristotelis Logica Praeludium. Manuscript Coursebook of Philosophy, 1601
Condition: Very Good
An early 17th century Latin manuscript coursebook of philosophy, containing texts on Aristotle’s Logic.
There are three different hand drawn diagrams throughout, key to Aristotelian Logic. including a Porphyrian Tree, the Square of Opposition, and what appears to be another diagram of a Porphyrian Tree, though it bears a sharper similarity to the Kabbalistic Tree of Life, used in Neoplatonic fashion.
The Porphyrian Tree is a classic device for illustrating what is also called a "scale of being". The philosopher Porphyry presented Aristotle's classification of categories, later adapted into tree diagrams of two-way decisions, indicating that a species is defined by a genus and a differentia, with the logical process continuing until the lowest species is reached, which can no longer be so defined.
The Square of Opposition is a diagram representing the relations between the four basic categorical propositions, with Aristotle making the distinction between two oppositions: contradiction and contrariety.
There are numerous annotations in the margins, with several charming manicles as well.
One vellum bound manuscript in octavo, 180 leaves
On note of condition, this manuscript is in very good shape, with minor wear and staining to the binding. The upper right corner of the first leaf is lacking, and the lower right corner of leaf 101. The diagram of the Porphyrian Tree is torn at the lower right, though present. There are several smaller closed tears to the margins. The final leaf is detached and torn in half. There is minor foxing and staining throughout.