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Part 1 Conditions of trade: Introduction contracts and the client's control art and matter the value of skill perception of skill. Part 2 The period eye: Relative perception pictures and knowledge the cognitive style the function of images Istoria the body and its language figure patterns the value of colours volumes intervals and proportions the moral eye. Part 3 Pictures and categories: Words and pictures Giovanni Santi's twenty-five painters Cristoforo Landino categories, including nature, relief, purity, ease, perspective, grace, ornateness, variety, composition, colouring, design, difficulty, foreshortening, promptness, blitheness, devotion conclusion. Texts and references. Index.
Hermerén et al. (1973) studied this question.