"Why, Bill!" She moved along, but Marian danced up.

"Oh, Mr. Bill! Come take a belly-bump with us, Mr. Bill. Can you go belly-bump?"

"I think so." Bill smiled across her head at Catherine.

"Don't let her bully you, if you don't want to." But they were off, Bill flat on the sled, Spencer clinging to his shoulders, and Marian sprawled on top of Spencer. Letty poked herself erect and opened her mouth for a shriek.

"Here, Letty!" Catherine pulled her, stiff and unbending, onto her knee. "If you don't yell, perhaps Bill will take you down. Don't scare him." Ridiculous and amusing, those flying legs. Like a scooting centipede.

"You come try it, Catherine." They had climbed up the slope to her again.

"Take Letty first." And then Catherine tried it, while the children stood in a row, shrieking with delight. "Go belly-bump, Muvver!" How Marian loved that word! But Catherine insisted on sitting up, while Bill knelt behind her to steer. A swift, flying moment, the air shrill in her ears, and laughing, they grated to a standstill on bare ground at the foot of the hill.

"If we had a real hill, now." Bill dragged the sled up, one hand firm under Catherine's arm. "I remember a hill we used to coast down when I was little. It seemed miles long, on the way up, at least."

Lucky he came along, thought Catherine, contentedly. Or he might have hated to see me, after Friday night.