It was the bits of snow that kept rousing him when he did not want to be roused.

At last his will clicked into action.
"I mustn't lie here," he said; "it's silly." But still he did not move.
"I said I was going to get up," he repeated.

"Why don't I ?" And still it was some time before he had sufficiently pulled himself together to stir; then gradually he got up.

Pain made him sick and dazed, but his brain was clear.

Reeling, he groped for his coats and got them on, buttoning his overcoat up to his ears.