The forests thickened and jungle monkeys scampered about the trees.

The forest and the mist thickened and wrapped about him like a cloak; everything disappeared outside a ten-foot sweep.

Toward the equator green life still dung in valleys and plains, where forests thickened.

The forest thickened, then broke away, and the black road was before him, curving in from the east to wind northward again.

The forest thickened around them.

But as I watched, the forest thickened, grew darker, and soon the sun was hid- den behind thick, black boughs heavy with foliage.

Under circumstances where pleasure might have been possible Ellen would have reveled in this hard ride into a wonderful forest ever thickening and darkening.

The trees passed, and the forest thickened.

I stood and watched her as her white figure, gliding through the deepening gloom, faded as the forest thickened.

The forest thickened until the wagons had to weave continually between the trunks of the trees.