Acknowledgments Kelly Anderson, V.S. Arunachalam, Bell Laboratory Archives, Yann le bouar(who kindly provided Fig. 12.3(n used on the cover), Stephen Bragg, Ernest Braun, Paul D. Bristowe, Joseph E. Burke, the late Hendrik B.G. Casimir, Leo Clarebrough Clive Cohen, Peter Day, Anne Smith Denman, Cyril Domb, Peter Duncumb, Peter Edwards, Morris Fine, Joan Fitch, Jacques Friedel, Robert L. Fullman, Stefano Gialanella, Jon Gjonnes, Herbert Gleiter, Gerhard Goldbeck-Wood, Charles D Graham, Martin L Green, A Lindsay Greer, Karl A Gschneidner Jr, the late Peter Haasen, Richard H.J. Hannink, Jack Harris, Sir David Harrison, Peter w. Hawkes Mats hillert. Sir Peter Hirsch. Michael Hoare. Gerald Holton, the late John P. Howe, Archibald Howie, Paley Johnson, Stephen Keith, the late Andrew Keller, Peter Keller, the late David Kingery, Reiner Kirchheim, Ernest Kirkendall, Ole Kleppa, Masahiro Koiwa, Gero Kostorz, Eduard V. Kozlov, Edward Kramer, Kehsin Kuo. Vladislav G. Kurdyumov, Elisabeth Leedham-Green, Lionel M Levinson, Eric Lifshin, James Livingston, John W. Martin, Thaddeus Massalsk David Melford, the late Sir Harry Melville, Peter Morris, Jennifer Moss, William W. Mullins, John Mundy, Frank Nabarro, Hideo Nakajima, the late Louis Neel, Arth S. Nowick, Kazuhiro Otsuka, Ronald Ottewill, David Pettifor, Jean-Paul Poirier, G D. Price, Eugen Rabkin, Srinivasa Ranganathan, C N.R. Rao, Percy Reboul, M. Wyn Roberts, John H. Rodgers, Rustum Roy, Derek W. Saunders, Peter Paul Schepp, Hermann Schmalzried, Changxu Shi, K. Shimizu, Frans Spaepen, Hein Stuwe, Robb Thomson, Victor Trefilov, C. Tuijn, David Turnbull, Ruslan Valiev Ajit Ram Verma, Jeffrey Wadsworth, Sir Frederick(Ned) Warner, James A Warren, Robert C. Weast, Jack H. Westbrook, Guy White, Robert J. Young, Xiao- Dong Xiang. I apologise for any inadvertent omissions from this list Erik Oosterwijk and Lorna Anderton of Elsevier have efficiently seen to the minutiae book production and I thank them for all they have done My son Andrew has steadfastly encouraged me in the writing of this book, and thank him for this filial support. My dear wife, Pat, has commented on various passages Moreover, she has made this whole enterprise feasible, not only by her confidence in her eccentric husband s successive pursuits but by always providing an affectionate domestic environment; I cannot possibly ever thank her enoug ROBERT CAHNx Acknowledgments Kelly Anderson, V.S. Arunachalam, Bell Laboratory Archives, Yann le Bouar (who kindly provided Fig. 12.3(f) used on the cover), Stephen Bragg, Ernest Braun, Paul D. Bristowe, Joseph E. Burke, the late Hendrik B.G. Casimir, Leo Clarebrough, Clive Cohen, Peter Day, Anne Smith Denman, Cyril Domb, Peter Duncumb, Peter Edwards, Morris Fine, Joan Fitch, Jacques Friedel, Robert L. Fullman, Stefano Gialanella, Jon Gjonnes, Herbert Gleiter, Gerhard Goldbeck-Wood, Charles D. Graham, Martin L. Green, A. Lindsay Greer, Karl A. Gschneidner Jr, the late Peter Haasen, Richard H.J. Hannink, Jack Harris, Sir David Harrison, Peter W. Hawkes, Mats Hillert, Sir Peter Hirsch, Michael Hoare, Gerald Holton, the late John P. Howe, Archibald Howie, Paley Johnson, Stephen Keith, the late Andrew Keller, Peter Keller, the late David Kingery, Reiner Kirchheim, Ernest Kirkendall, Ole Kleppa, Masahiro Koiwa, Gero Kostorz, Eduard V. Kozlov, Edward Kramer, Kehsin Kuo, Vladislav G. Kurdyumov, Elisabeth Leedham-Green, Lionel M. Levinson, Eric Lifshin, James Livingston, John W. Martin, Thaddeus Massalski, David Melford, the late Sir Harry Melville, Peter Morris, Jennifer Moss, William W. Mullins, John Mundy, Frank Nabarro, Hideo Nakajima, the late Louis N6el, Arthur S. Nowick, Kazuhiro Otsuka, Ronald Ottewill, David Pettifor, Jean-Paul Poirier, G.D. Price, Eugen Rabkin, Srinivasa Ranganathan, C.N.R. Rao, Percy Reboul, M.Wyn Roberts, John H. Rodgers, Rustum Roy, Derek W. Saunders, Peter Paul Schepp, Hermann Schmalzried, Changxu Shi, K. Shimizu, Frans Spaepen, Hein Sttiwe, Robb Thomson, Victor Trefilov, C. Tuijn, David Turnbull, Ruslan Valiev, Ajit Ram Verma, Jeffrey Wadsworth, Sir Frederick (Ned) Warner, James A. Warren, Robert C. Weast, Jack H. Westbrook, Guy White, Robert J. Young, Xiao￾Dong Xiang. I apologise for any inadvertent omissions from this list. Erik Oosterwijk and Lorna Canderton of Elsevier have efficiently seen to the minutiae of book production and I thank them for all they have done. My son Andrew has steadfastly encouraged me in the writing of this book, and I thank him for this filial support. My dear wife, Pat, has commented on various passages. Moreover, she has made this whole enterprise feasible, not only by her confidence in her eccentric husband's successive pursuits but by always providing an affectionate domestic environment; I cannot possibly ever thank her enough. ROBERT CAHN