Final answer:
The author uses logos in the passage by presenting a logical differentiation between Venus's role in general desire and Cupid's role in directing that desire towards an individual.
Step-by-step explanation:
The author of the passage from 'Of the Wisdom of the Ancients' structures the text by using logos to present a logical explanation of the functions of Venus and Cupid in relation to human desire and affection. The author differentiates between the general disposition Venus instills for conjunction and procreation, and the specific directed passion that Cupid inspires towards an individual object. This analytical explanation showcases the rational appeal (logos) rather than an emotional (pathos) or connotative approach.