PROFESSOR OF GEOLOGY AND MINERALOGY IN THE ROYAL COLLEGE OF SCIENCE FOR IRELAND
AND DIRECTOR OF THE GEOLOGICAL SURVEY OF IRELAND.

CHARLES GRIFFIN AND COMPANY, LIMITED;

EXETER STREET, STRAND.

1906.

[All Rights Reserved.]

PROFESSOR J. W. JUDD, C.B., LL.D., F.R.S.,

the Fittb Edition of this Book is inscribed,

IN GRATEFUL RECOLLECTION OF THE AUTHOR'S FIRST LESSONS

IN PRACTICAL GEOLOGY, AND OF THE FRIENDLY HELP
ACCORDED TO HIM THROUGHOUT THIRTY YEARS.

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