"That wouldn't do for you, eh?" remarked Mr. Crowninshield with a chuckle.

"It would not satisfy me; no, sir. As it is I cannot begin to master what there is to be known concerning this one branch of science. Were my head to be filled with a little of everything I should feel as if it were a grab bag."

"Many heads are," was the laughing retort. "Still, with each successive generation rolling up its accumulation of knowledge the intellectual snowball is getting to be of ponderous size. History's remedy for this malady has always been to knock the whole structure to pieces every now and then and begin again. Perhaps we shall have to have another period of the Dark Ages and another Renaissance to set us right."

Thoughtfully he puffed his cigar.

"This wireless now—think of the new fields it has opened up. Not only are our ships equipped so that they can send and receive all sorts of messages, get their location, be informed concerning harbor entrances and coast lines; set their compasses and clocks but soon wireless telephones will be installed in the staterooms of all passenger steamers so that those crossing the ocean can talk with their friends ashore any time they may elect to do so. Of course there are times when such a thing might have its advantages; but for tired people—doctors and the like—who are trying to get to a spot where they cannot be reached by business cares it will be a negative sort of blessing. I, myself, for example, always count on my stay on shipboard as a sort of vacation, an interval when nobody can bother me with office matters. But if in future I must have a wireless telephone at my bedside I shall be no more isolated than I should have been had I remained at home. Pretty soon there will be no place under the sun where a man can go and get peace and quiet. The Maine woods will be full of radio outfits and the tops of distant mountains in touch with the stock market. Even an aeroplane carries its wireless. It is hideous to contemplate!" he sighed. "As for city life, we shall be beset wherever we go. And if the fashion set by some of our city police of having wires tucked away in uniforms and a wireless receiver carried in the pocket prevails in due time even when we walk the streets we shall all be in constant touch with our particular headquarters."

At his rueful expression Bob could not but laugh.

"There certainly is no question that a great day for wireless is coming," replied he. "Whether we like it or not the thing has come to stay and as yet we have only half discovered what can be done with it. It is undoubtedly rough on those who want isolation. But most people don't. They are glad to feel, for instance, that the ocean is so small they can talk with their friends while they are crossing it. Besides, you must not forget how much good ship surgeons and doctors can now do for those who otherwise would have no aid at hand. Remote lighthouses and small ships that need medical service often signal the big liners now and ask advice of the ship's doctor. I heard a little while ago of a lighthouse keeper whose leg was amputated under the wireless direction of one of our great surgeons. Had instructions not been available the man would probably have died of blood poison. And many times there is sickness aboard small vessels that are out to sea. They signal the symptoms of their patients and the doctor hundreds of miles away replies with a remedy. As all boats carry medicine chests the distant physician can easily designate what dose to give."

"That is a fine idea!" nodded Mr. Crowninshield. "I hadn't thought of treating illness by radio. A bit tough on the doctor, though. It must keep him busy."

"I am afraid it does. In fact some of the ship's surgeons are demanding higher pay because of the rush of work put on them. To have the health of a large ship under one's supervision is task enough without treating all the people sailing the ocean. They say some doctors are all in after a trip simply because of the extra calls that pour in from outside ships and stations. It keeps them hopping day and night, for of course no decent doctor will ever refuse aid to those who are suffering."

"Humph! That is quite a new phase of wireless."