The coachman walks on foot beside his cattle, to guide them with greater security through the uneven ill- paved streets, in which you are continually either ascending or descending a hill.
Wagons there are none; every thing is carried either by men, horses, or asses.

This circumstance explains the fact that more porters are found here than in any other city.

These men are agile and very strong; a porter often bears a load of from one hundred to a hundred and fifty pounds through the rugged hilly streets.

Wood, coals, provisions, and building-materials are carried by horses and asses.
This may be one reason why every thing is so dear in Constantinople..