I should perhaps apologise for publishing a work which professes to deal with the sanctuaries of Piedmont, and saying so little about the most important of them all-the Sacro Monte of Varallo. My excuse must be, that I found it impossible to deal with Varallo without making my book too long. Varallo requires a work to itself; I must, therefore, hope to return to it on another occasion.For the convenience of avoiding explanations, I have treated the events of several summers as though they belonged to only one. This can be of no importance to the reader, but as the work is chronologically inexact, I had better perhaps say so.The illustrations by Mr. H. F. Jones are on pages 95, 211, 225, 238, 254, 260. The frontispiece and the illustrations on the title-page and on pages 261, 262 are by Mr. Charles Gogin. There are two drawings on pages 136, 137 by an Italian gentleman whose name I have unfortunately lost, and whose permission to insert them I have, therefore, been unable to obtain, and one on page 138 by Signor Gaetano Meo. The rest are mine, except that all the figures in my drawings are in every case by Mr. Charles Gogin, unless when they are merely copied from frescoes or other sources. The two larger views of Oropa are chiefly taken from photographs. The rest are all of them from studies taken upon the spot.I must acknowledge the great obligations I am under to Mr. H. F. Jones as regards the letterpress no less than the illustrations; I might almost say that the book is nearly as much his as mine, while it is only through the care which he and another friend have exercised in the revision of my pages that I am able to let them appear with some approach to confidence.