ACKNOWLEDGEMENTS
To the Brazilian Institute of Forest Development for
permitting the work to be done; to Professor Sylvio Pellico
Neto and the School of Forestry at the Federal University of
Parana for providing the facilities; to the Brazilian
Institute of Space Research at $80 Jose do Campos for
providing the analytical facilities on the G.E 100 Image
Analyser. We would also like to acknowledge the help given
by the Royal Botanic Gardens, Kew and Dr. Peter Gasson for
preparing the slides of Araucaria leaves and to Susan
Thompson and David Boothroyd for their help.
The slide of the leaf of Araucaria Angustifolia is
reproduced by permission of the Controller of Her Majesty's
Stationary Office and the Director of the Royal Botanic
Gardens, Kew.