51
Muscles being more solid waste less easily than other parts, save bone and sinew. Parts that have been exercised resist change, being according to their kind stronger than they otherwise would have been, and therefore less liable to waste.
52
Pus comes from flesh; pus-like lymph comes from blood and moisture generally. Pus is nutriment for a sore; lymph is nutriment for vein and artery.
53
Marrow nutriment of bone, and through this a callus forms.
54
Power gives to all things increase, nourishment and birth.
55
Moisture the vehicle of nutriment.
