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The relationship between log rate of loss of leaf area to herbivores (y, determined by Coley, 1983) and (A) fracture toughness (x1, Appendix 3), and (B) punch strength (x2, Coley 1983). Regressions are: y = 0·455 – 0·00482x1 (r = 0·660), and y = 0·848 – 0·812x2 (r = 0·727).
