A manual of the principles and practice of road-making: comprising the location, construction, and improvement of roads, (common, macadam, paved, plank, etc.) and rail-roads. By W. M. Gillespie ...

STONE PAVEMENTS. 225
incline towards the street at the rate of one inch in ten
feet, or 1 in 120.*
ADVANTAGES.
The advantages of such a pavement are its smoothness
and uniformity of surface, enabling vehicles to be drawn
over it with ease to the horses, comfort to the passengers,
and but little wear and tear of the carriages, which can
be therefore made much lighter than at present. At the
same time it gives a good foothold to the horses; causes
very little noise, yet enough to warn tie foot-passengers
of the approach of a vehicle, and is very easily cleaned
of the dirt which may collect upon it. It is also very
durable, thereby rendering unnecessary the frequent stoppage of a street for repairs; and though at first more
expensive than cobble-stones, is finally far more economical.
PAVED AND MoADAM ROADS COMPARED.
McAdam maintains that his roads are preferable to
pavements, even for the streets of cities. He argues tha.
they are cheaper, as requiring no more stone than pavemerits, admitting an inferior quality, and costing less for
repairs; and that they give greater facility of travelling, and
cause less annoyance from dust, when properly swept and
watered. But experience in the streets of London shows
the cost of broken-stone roads to be far greater than
pavements, to which they are inferior in every respect.t
The result of very full discussions at the Civil Engineers'
Institution was, that a whin or granite pavement, of proper
form and depth, laid on a sound bottom, is preferable to
* Parnell, p. 120. i- Parnell, p. 126.