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A treatise on roads : wherein the principles on which roads should be made are explained and illustrated, by the plans, specifications, and contracts / made use of by Thomas Telford
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CONTENTS. ix

CHAP. IX.

IMPROVING OLD ROADS, P. 234.

Page

Objects to be attended to - - 234

Turnpike Roads - - - 235

Direction ----- 235

Convexity - - _ - - 236

Hardness - - - - - 236

Drains - ~ ^£5®

Embankment - 236

Footpath ----- 236

Side Channels - - 236

Wastes ----- 236

Fences ----- 236

Parish Roads - - ~ - 241

Surface ----- 241

Convexity - - - - 241

Drains - - - - 241

Embankment - ' 242

CHAP. X.

REPAIRING ROADS, P. 243.

Quality of Materials - 24 ^

BasaltGraniteQuartz SyenitePorphyry

_Wliinstone Guernsey Granite Mount-

sorrel StoneHartshill Stone - - 244

Shropshire , Staffordshire , and Warwickshire

Pebbles - 244

Schistus LimestoneSandstone - - 244