“We’ll wait another hour and see if we can get away then,” decided Slim.

Jane and Miss Comstock sat down in the waiting room, drawing their coats around them, for at eight below zero the heating plant was functioning none too well.

The pilot came in with two fleece-lined coats.

“Better put these on,” he advised. “There won’t be much heat in the cabin and I don’t want to drop down at Lytton with a couple of frozen stewardesses on my hands.”

They accepted the coats gratefully and waited for the next reports on the storm.

It was dismal waiting there, with the wind howling around the hangar and the snow driving against the windows. At midnight it was still storming hard and they delayed their departure another hour. But the storm held on and the sky was greying before Slim Bollei decided to make the attempt.

The motors of the huge biplane roared lustily in spite of the cold, the hampers and the precious serum were placed aboard, parachutes were adjusted under their coats and the trio, the chief pilot and the two stewardesses, struggled out to the plane.

The cabin was cold and it would take some time before heat from the motors warmed it. Miss Comstock and Jane kept moving about and looking out at the storm. It was still snowing, but the fall was not as thick as it had been during the night. Reports from the west indicated the end of the blizzard was near.

Slim Bollei came back into the main cabin.

“All ready?” he asked.