Page:Life Movements in Plants.djvu/210

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LIFE MOVEMENTS IN PLANTS

growth for the mean temperature ⁠T + T′/2⁠ is found from the formula: rate of growth at ⁠T + T′/2⁠ = ⁠l/m × t × 60⁠103μ per sec.

22°C
30°C
40°C
MAGNIFIED INCREMENT OF GROWTH IN MM.
TIME IN MINUTES

Fig. 66.—The Thermo-crescent Curve.

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