Giovanni Morelli (1816-91), the Italian connoisseur, in the 1870’s and 1880’s, writing under the pseudonym Lermolieff worked out a method for distinguishing original works of art from copies. His method was a curious one, involving the study of small and unimportant details of the painting in order to discover the authentic touch of the master. An illustration from his book, Italian Masters in German Galleries shows ears from paintings by the Florentines Leonardo da Vinci and Lorenzo di Credi, and through the differences in form between these two details, Morelli believed he could distinguish two artists of the same school. A second illustration from Morelli's book shows that conversely, two different parts of the body bear a family resemblance to one another—here the hand and ear are both long, thin and tapering forms. In his study of paintings in the Borghese Gallery, Morelli explained how such details could help the connoisseur identify a master: “Copyists can never have any character or style, for ‘form’ in their works is not due to their own idea … As most men, both speakers and writers, make use of habitual modes of expression, favourite words and sayings, which they often employ involuntarily and sometimes even most inappropriately, so almost every painter has his own peculiarities, which escape him without his being aware of it … Anyone intending to study a painter more closely and to become better acquainted with him, must take into consideration even these material trifles (a student of calligraphy would call them flourishes), and know how to discover them …”