Cicely, however, who would do something, turned the cheeses in the cheese-room alone.

Taking one corner of the clean cloth in her teeth, in a second, by some dexterous sleight-of-hand, the heavy cheese was over, though ponderous enough to puzzle many a man, especially as it had to come over gently that the shape might not be injured.
She did it without the least perceptible exertion.

At the moment of the turn, when the weight must have been felt, there was no knot of muscle visible on her arm.

That is the difference; for When Ajax strives some rock's vast weight to throw the muscles of the man's limb knot themselves and stand out in bold relief.

The smooth contour of Cicely's arm never varied.