372 
pliny's natueal histoey. 
[Book XXIX. 
Chrysippus, by Erasistratus, son^ of the daughter of Aristotle. 
Por the cure of King Antiochus — to give our first ilhistration 
of the profits realized by the medical art — Erasistratus re- 
ceived from his son. King Ptolemaeus, the sum of one hundred 
talents. 
CHAP. 4. THE EMPIKIC BRANCH OF MEDICINE. 
Another sect again, known as that of the Empirics^^ — be- 
cause it based its rules upon the results of experiment — 
took its rise in Sicily, having for its founder Acron of Agri- 
gentum, a man recommended by the high authority of Empe- 
docles^^ the physician. 
CHAP. 5. PAETICIJLAES RELATIVE TO HEROPHILTJS AND OTHER 
CELEBRATED PHYSICIANS. THE VARIOUS CHANGES THAT HAVE 
BEEN MADE IN THE SYSTEM OF MEDICINE. 
These several schools of medicine, long at variance among 
themselves, were all of them condemned by Herophilus,^^ who 
regulated the arterial pulsation according to the musicaP^ 
scale, correspondingly with the age of the patient. In suc- 
ceeding years again, the theories of this sect were abandoned, 
it being found that to belong to it necessitated an acquaintance 
with literature. Changes, too, were effected in the school, of 
w^hich, as already^^* stated, Asclepiades had become the founder. 
His disciple, Themison,^^ who at first in his writings implicitly 
followed him, soon afterwards, in compliance with the growing 
degeneracy of the age, went so far as to modify his own me- 
thods of treatment ; which, in their turn, were entirely dis- 
placed, with the authorization of the late Emperor Augustus, 
by Antonius Musa,^^ a physician who had rescued that prince 
^ Pythias, the daughter of Aristotle, was his stepmother, and adopted 
him. His mother's name was Cretoxena. 
1^ Or " Sect of Experimentalists." They based their practice upon ex- 
perience derived from the observation of facts. The word " Empiric " is 
used only in a had sense at the present day. For an account of Hippo- 
crates, see end of B. vii. ; of Chrysippus, see end of B. xx. ; and of Erasis- 
tratus, see end of B. xi. 
^1 See end of B. xi. 12 gg^ end of B. xi. 
^'^ See B. xi. c. 88. The Chinese, Ajasson remarks, apply the musical 
scale to the pulsation ; it being a belief of the Mandarins that the body is 
a musical instrument, and that to be in health it must be kept in tune. 
13* B. xxvi. cc. 7 8. 
1* See end of B. xi.' * gge B. xix. c. 38. 
