"Diphtheria!" he exclaimed.

"Diphtheria!" he exclaimed. "Label's type unless I am greatly mistaken. Some authorities are disposed to scoff at Dr. Label's discovery. I was an assistant of his for four years and I know better. Fortunately I happen to know what the treatment—successful in two cases—was."

He hurried from the house and returned a few minutes later breathlessly. He had some strange-looking, needle-like instruments in his hands. He took an electric lamp from its socket and substituted a plug on a flex instead. Then he cleared a table without ceremony and managed to hoist his patient upon it.

"Now please hold that lamp steadily thus," he said. "Bravo, you are a born nurse! I am going to apply these electric needles to the throat."

Hubert talked on more for the sake of his companion's nerves than anything else. The still figure on the table quivered under his touch, his lungs expanded in a long, shuddering sigh. The heart was beating more or less regularly now. Fillingham opened his eyes and muttered something.

"Ice," Hubert snapped, "have you got any ice in the house?"

It was a well-regulated establishment and there was plenty of ice in the refrigerator. Not until the patient was safe in bed did Hubert's features relax.

"We'll pull him through yet," he said. "I'll send you a competent nurse round in half-an-hour. I'll call first thing in the morning and bring Dr. Label with me. He must not miss this on any account."

Half-an-hour later Hubert was spinning along in a hansom towards Harley Street. It was past one when he reached the house of the great German savant. A dim light was burning in the hall. A big man with an enormous shaggy head and a huge frame attired in the seediest of dress coats welcomed Hubert with a smile.