CONTENTS 



Page 



INTRODUCTION 1 



DESCRIPTION OF DATA 2 



DERIVING THE FUNCTIONAL FORM FOR 



THE PREDICTION EQUATIONS 8 



Differential Model 9 



Finite Difference Model 10 



Differential Model — Logarithmic Form 11 



Removing Bias in Logarithmic Form 15 



APPLICATIONS 16 



Calculating Current Annual Increment 16 



LITERATURE CITED 18 



APPENDIX: FORTRAN IV Subroutine 19 



iii 



