Acknowledgments are due to various gentlemen for valuable assistance and suggestions in bringing out this work. To the author I am indebted, not only for kindly granting me liberty to translate his book into English, but for notes and communica tions sent me while engaged in its translation. I would also take this Opportunity of expressing my obligations to Mr. John Robson of George Watson's College Schools, and especially to Mr. Joseph Anderson, keeper of the National Museum of the Society of Antiquaries, Edinburgh. Other gentlemen have kindly supplied me with informa.