ANATOMICAL ILLUSTRATION 973 
in eight additional volumes in 1901. This does not include the 
volume on the anatomy of the horse. The range of the drawings 
is astonishing; the entire collection embraces more than 750 
separate sketches, some of them being several times repeated. 
The notes accompanying the sketches, always written from right 
to left, are, usually, descriptions of the figures, but, sometimes, 
are general reflections regarding the plan of his projected book. 
That he read anatomy is evident since he specifically corrects 
some misstatements of Mundinus. Leonardo placed great reli- 
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Fig. 16 Sketches of sections of the brain by Da Vinci, 1510. 
ance on good figures, declaring them to be essential to the under- 
standing of anatomy. Some of his delineations of muscles have 
been so frequently reproduced that they are well known, but it 
is not so generally known that he made deep dissections of all 
kinds including the viscera and the brain. 
The reproduction of a few of Leonardo’s sketches will serve 
to show their quality, and will at once reveal the fact that they 
are totally different from any other sketches of the period. These 
drawings are not made from anatomical descriptions, but from 
