It was obvious that climbing needed study.
For all that, he went on and found a strange delight in watching Barbara.

Her clothes harmonized with the soft colors of lichen and stone; her movements were confident and light.

He got no sense of effort; her pose was seldom strained and the lines of her limbs and body flowed in easy curves.

He thought she rather flitted than labored up the rock.

Practice no doubt accounted for much, but something was due to temperament.