In the general absence of coal mines, the importance of the peat-product can hardly be over-estimated.
"Due North or Glimpses of Scandinavia and Russia"
Maturin M. Ballou
She realized how completely she had under-estimated her own charm.
"The Locusts' Years"
Mary Helen Fee
Twenty-six of the best dogs were picked, and upon two sleds were to be loaded all our needs for a trip estimated to last eighty days.
"My Attainment of the Pole"
Frederick A. Cook