Finally, I have to express my obligation to many other friends, who
never failed cordially to respond to any call I made upon them.

D.D.

EDINBURGH, 22 DRUMMOND PLACE, _October_ 1, 1890.




ILLUSTRATIONS.


VOL. I.

PORTRAIT, painted by JOHN GRAHAM GILBERT, R.S.A., for the Royal Society,
Edinburgh. Copied by permission of the Council of the Society,
_Frontispiece_

VIGNETTE on Title-page

"The Dial-Stone" in the Garden, from drawing made at Abbotsford by
GEORGE REID, R.S.A.

"WORK WHILE IT IS DAY."

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