Note 766 — Chapter II · THE ROMAN EMPIRE UNDER ANASTASIUS: THE INHERITANCE OF JUSTINIAN
Reading edition
Pliny, Hist. Nat., vi, 26; Pseud-Arrian, Peripl. Mar. Erythr., 57. For a discussion as to the date of Hippalus see Vincent, Commerce of the Ancients, ii, p. 47, etc. The S.W. monsoon blows from April to October, the N.E. in the interval.