[Footnote: The two drawings given on Pl. CVIII no. 1 come between lines 3 and 4. A good and very early copy of this drawing without the written text exists in the collection of drawings belonging to Christ's College Oxford, where it is attributed to Leonardo.]
810.
Describe which muscles disappear in growing fat, and which become visible in growing lean.
And observe that that part which on the surface of a fat person is most concave, when he grows lean becomes more prominent.
Where the muscles separate one from another you must give profiles and where they coalesce …
811.
OF THE HUMAN FIGURE.
Which is the part in man, which, as he grows fatter, never gains flesh?
Or what part which as a man grows lean never falls away with a too perceptible diminution? And among the parts which grow fat which is that which grows fattest?
Among those which grow lean which is that which grows leanest?