Acknowledgements
I should like to thank my wife, Doris, and my kids, Alex and Gina, for the
help, ideas and encouragement they contributed during the writing of
this book. I’d also like to thank all the people who took part in my
memory seminars and provided me with guinea pigs on whom to test my
ideas.
Picture credits
The publisher wishes to thank the organizations listed below for their
kind permission to reproduce the photographs in this book. Every effort
has been made to acknowledge the pictures, however we apologize if
there are any unintentional omissions.
B = bottom; L= left; R = right; T = top; C = centre.
ARS-USDA /91.
Clip Art / 99, 100, 101, 110, 111.
Digital Stock /16, 54CL.
Digital Vision / 15, 16, 17T, 20CL, 20C, 20n, 20TR, 20T, 21, 22, 27, 29,
30, 44, 45, 55CR, 58, 86, 87, 91, 108.
Illustrated London News /92, 132.
Photo Disc / 14, 20BR, 20B, 21, 54BL, 54B, 55CL.
Stockbyte / 17B, 21, 54TR, 54BR, 55B, 86, 87.
US Fish & Wildlife Service /91.