1911 Encyclopædia Britannica, Volume 5… (1911)
“ The number of camels or mules in a single caravan varies from forty or so up to six hundred and more; sometimes, as on the reopening of a long-closed route, it reaches a thousand. The ordinary caravan seasons are the months of spring, early summer and later autumn. Friday, in accordance with a recommendation made in the Koran itself, is the favourite day for setting out, the most auspicious hour being that immediately following noonday prayer. The first day’s march never does more than just clear the starting-point. Subsequently each day’s route is divided into two stages,—from 3 or 4 a.m. ”
