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 1 [Title]|                On youth and old age, on life and death, on breathing~
 2 1      |      now treat of youth and old age and life and death. We must
 3 5      |       former is that due to old age, the latter to violence.]
 4 10     |      when natural, owing to old age, and, when unnatural, to
 5 22     |         owing to discase or old age, their death ensues.~
 6 23     |     speedily cause death in old age. Little heat remains, for
 7 23     | movement puts out. Hence in old age death is painless, for no
 8 24     |     organ of refrigeration, old age of its decay, while the
 9 24     |   animals to die. Death, in old age, is the exhaustion due to
10 24     |         the organ, owing to old age, to produce refrigeration.