PRINCIPLES

     1. The Uniformitarian Principle

     2. The Principle of Limiting Factors

     3. The Principle of Ecological Amplitude

     4. The Principle of Site Selection - Sensitivity

     5. The Principle of Crossdating

     6. The Principle of Repetition

     7. Standardization

     8. Calibration and Verification

     9. Modeling Growth-Environmental Relationships