case. He has a fine constitution, and this would never have happened had he not been run down from overwork. That is the principal trouble. What he needs is rest; and then, with the proper remedies, he will be as well as before."
"But that strange lapse of memory, doctor?"
"Oh, that is nothing. It is due to the fact that he has been using his brain too much. The brain protests, and refuses to work until rested. Your father has been working rather hard of late, hasn't he?"
"Yes; on a new wireless motor."
"I thought so. Well, a good rest is what he needs, and then his mind and body will be in tune again. I'll be around in the morning."
Tom was somewhat relieved by the doctor's words, but not very much so, and he spent an anxious night, getting up every two hours to administer the medicine. Toward morning Mr. Swift fell into a heavy sleep, and did not awaken for some time.
"Oh, you're much better!" declared Dr. Gladby when he saw his patient that day.
"Yes, I feel better," admitted Mr. Swift.
"And can't you remember about Mr. Gunmore calling?" asked Tom.
The aged inventor shook his head, with a puzzled air.
