1. 29 The valley of the White Kielder Burn steepened again as I trudged north, its curves tightening.

2. It has been shown by Chevandrier, that an acre of land under beech wood Accumulates annually about 1650 lb. ELEMENTS OF AGRICULTURAL CHEMISTRY THOMAS ANDERSON If by chance the detritus Accumulates rapidly, the slope is steepened and the work of the torrent made more efficient