Note 152 — Chapter III · THE RATE OF GROWTH (continued 2)
Reading edition
It may well be that the effect is not due to light after all; but to increased absorption of heat by the soil, as a result of the long hours of exposure to the sun.
Reading edition
It may well be that the effect is not due to light after all; but to increased absorption of heat by the soil, as a result of the long hours of exposure to the sun.