968 WILLIAM A. LOCY 
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Fig. 11 Visceral anatomy from Reisch’s Margarita Philosophica, 1504. This 
cut from Brunschwig’s Destillirbuch, 1512 (after Wieger) 
notable fidelity to nature in his sketches. Although the larger 
number of his anatomical drawings were made about 1510 they 
were not fully published until 1898 and 1901. They bear inter- 
nal evidence of having been made from actual dissections. It is 
well known that he became associated with Della Torre who 
projected a treatise on anatomy for which Leonardo was to supply 
the drawings. Nevertheless, Da Vinci had studied anatomy inde- 
pendently before his association with Della Torre, and he contin- 
