Page:Rivers, Canals, Railways of Great Britain.djvu/20

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xiv
PREFACE

undertaking, but, as they are well aware, to the advantage of their subscribers, and to the increased value of the work itself.

To many valued friends the compiler of the following pages has to express his gratitude for information and assistance in various parts within their immediate knowledge. To none of them are his thanks more justly due than to Mr. John Walker, civil engineer, one of the proprietors of the map and the surveyor by whom it has been executed. This gentleman, in the course of his survey of the kingdom, devoted a considerable portion of time to the collection of materials, which have added greatly to the value and interest of the volume now most respectfully presented to the public.

JO. PRIESTLEY.

AIRE CALDER NAVIGATION OFFICE,

April, 1831.