But the soil was moist; on reaching the top of the bank, she slipped and fell upon her knees.

Half way up, her foot slipped upon a loose, round rock.

They slipped away into side roads or off down alleyways upon my approach.

Like a plague of years past, he was slipping back upon the world.

All they did was to slip upon it and make a sore from which seeped only a little surface blood.

They howled when one of their number slipped upon piled-up money and fell to the floor.

Slipping and sliding upon the wet grass, they advanced to the assault.

The ape- man's fingers slipped from their hold upon the gunwale.

Some of the others seemed altogether slipping their hold upon speech, though they still understood what I said to them at that time.

He would slip upon her, you see, under cover of innocent and unimportant questions.