Acknowledgements

As the author of this book, I would like to express my appreciation to all those that had a part in preparing this book for printing;to all those that had a part in its typing: Christine Wing, Elaine Walsh, RyanBarbour, my son John, and my wife. I want to express my sincere appreciation to my wife and to my son for the hours that they spent in proof-reading the manuscript, getting it ready for the printing; also, to my son for the work that he did in getting together the arrangement of the picture for the cover.