"What!" exclaimed his father, looking at him in surprise, "it's your
favorite soup."

"I know," said Rob, quietly, "but I don't want any."

"Are you ill, Robert?" asked his mother.

"Never felt better in my life," answered Rob, truthfully.

Yet Mrs. Joslyn looked worried, and when Rob refused the roast, she was
really shocked.

"Let me feel your pulse, my poor boy!" she commanded, and wondered to
find it so regular.

In fact, Rob's action surprised them all. He sat calmly throughout the
meal, eating nothing, but apparently in good health and spirits, while
even his sisters regarded him with troubled countenances.

"He's worked too hard, I guess," said Mr. Joslyn, shaking his head
sadly.

"Oh, no; I haven't," protested Rob; "but I've decided not to eat
anything, hereafter. It's a bad habit, and does more harm than good."

"Wait till breakfast," said sister Helen, with a laugh; "you'll be
hungry enough by that time."

However, the boy had no desire for food at breakfast time, either, as
the tablet sufficed for an entire day. So he renewed the anxiety of
the family by refusing to join them at the table.

"If this goes on," Mr Joslyn said to his son, when breakfast was
finished, "I shall be obliged to send you away for your health."

"I think of making a trip this morning," said Rob, carelessly.

"Where to?"

"Oh, I may go to Boston, or take a run over to Cuba or Jamaica,"
replied the boy.

"But you can not go so far by yourself," declared his father; "and
there is no one to go with you, just now. Nor can I spare the money at
present for so expensive a trip."

"Oh, it won't cost anything," replied Rob, with a smile.

Mr. Joslyn looked upon him gravely and sighed. Mrs. Joslyn bent over
her son with tears in her eyes and said:

"This electrical nonsense has affected your mind, dear. You must
promise me to keep away from that horrid workshop for a time."

"I won't enter it for a week," he answered. "But you needn't worry
about me. I haven't been experimenting with electricity all this time
for nothing, I can tell you. As for my health, I'm as well and strong
as any boy need be, and there's nothing wrong with my head, either.
Common folks always think great men are crazy, but Edison and Tesla and
I don't pay any attention to that. We've got our discoveries to look
after. Now, as I said, I'm going for a little trip in the interests of
science. I may be back to-night, or I may be gone several