Page:Researches into the Early History of Mankind and the Development of Civilization.djvu/23

simple expression of obligation the name of the late Henry Christy. For the ten years during which I enjoyed his friendship, he gave me the benefit of his wide and minute knowledge, and I was able to follow all the details of his ethnological researches. He died in May, 1865, while carrying on investigations in the ossiferous caverns of Central France with Prof. Edouard Lartet. The "Reliquiæ Aquitanicæ," an elaborate account of these explorations, is the principal literary work bearing the name of Henry Christy. But his place in the history of Ethnology will be marked by the magnificent collection which he bequeathed to the nation, and which, belonging to the British Museum, but still kept at his residence, 103, Victoria Street, Westminster, under the name of the Christy Collection, has been developed into one of the most perfect Ethnological Museums in Europe.

I am indebted to Dr. W. R. Scott, Director of the Deaf and Dumb Institution at Exeter, for much of the assistance which has enabled me to write about the Gesture-Language with something of the confidence of an "expert;" and I have to thank Prof. Pott, of Halle, and Prof. Lazarus, of Berlin, for personal help in several difficult questions. Among books. I have drawn largely from the philological works of Prof. Steinthal, of Berlin, and from the invaluable collection of facts bearing on the history of civilization in the "Allgemeine Cultur-Geschichte der Menschheit," and "Allgemeine Culturwissenschaft," of the late Dr. Gustav Klemm, of Dresden.]