GOETHE'S

Battista Alberti,¹⁰⁹ and from the mode in which some of Leonardo's propositions are stated, it has been supposed¹¹⁰ that he had been accustomed at Florence to the form of the Aristotelian philosophy. At all events, some of the most important of his observations respecting light and colours, have a great analogy with those contained in the treatise in question. The following examples will be sufficient