There is a common impression that Mr. Edison is an agnostic, but he denies it; and he said, in closing the conversation, “I tell you that no person can be brought into close contact with the mysteries of nature, or make a study of chemistry, without being convinced that behind it all there is supreme intelligence. I am convinced of that, and I think that I could, perhaps I may some time, demonstrate the existence of such intelligence through the operation of these mysterious laws with the certainty of a demonstration in mathematics.”
AN INTERVIEW WITH PROFESSOR ALEXANDER GRAHAM BELL.
By Cleveland Moffett.
II.
Professor Graham Bell is not like some pedantic wise men who talk as if they believed that the end of knowledge in their particular line had been already reached. On the contrary, this distinguished inventor is convinced that the discovery and inventions of the past will seem but trivial things when compared with those which are to come. Nor does he think that the day of man’s greater knowledge is so very far distant.
THE AIR-SHIP OF THE NEAR FUTURE.
“I have not the shadow of a doubt”—these are his own words, spoken to me quite recently at Washington—“that the problem of aerial navigation will be solved within ten years. That means an entire revolution in the world’s methods of transportation and of making war. I am able to speak with more authority on this subject from the fact of being actively associated with Professor Langley of the Smithsonian Institution in his researches and experiments. I am not at liberty to speak in detail of these experiments, but will say that the calculations of scientific men in regard to the amount of power necessary to maintain an air-ship above the earth have been strangely erroneous; I may say ridiculously so. According to these, Nature would have given the birds and insects a muscular 40 force vastly greater and superior in its qualities to that bestowed upon man. That seems unreasonable in the first place, when one reflects that man is at the head of creation, and we have found practically that such is not the case. The power required to lift and propel an air-ship is very much less than has been supposed; indeed, Professor Langley concludes that when the air-ship has once been lifted above the earth to the proper height, it will be possible to maintain it there with proportionately no greater effort than that expended by hawks and eagles in sailing about with extended wings. The air strata will do the bulk of the lifting, if a small propelling power is provided. Of course, a greater power will be necessary to lift the air-ship originally, and it may be some time before the art of managing an air-ship is discovered; but the final result, I am convinced, will allow men to sail about in the air as easily and as safely as the birds do. I predict that we will see the beginning of this modern miracle by the end of the nineteenth century.
“Of course the air-ship of the future will be constructed without any balloon attachment. The discovery of the balloon undoubtedly retarded the solution of the flying problem for over a hundred years. Ever since the Montgolfiers taught the world how to rise in the air by means of inflated gas-bags, the inventors working at the problem of aerial navigation have been thrown on the wrong track. Scientific men have been wasting their time trying to steer balloons, a thing which in the nature of the case is impossible to any great extent, inasmuch as balloons, being lighter than the resisting air, can never make headway against it. The fundamental principle of aerial navigation is that the air-ship must be heavier than the air. It is only of recent years that men capable of studying the problem seriously have accepted this as an axiom. Electricity in one form or another will undoubtedly be the motive power for air-ships, and every advance in electrical knowledge brings us one step nearer to the day when we shall fly. It would be perfectly possible, to-day, to direct a flying machine by means of pendant electric wires which would transmit the necessary current without increasing the load to be borne. Perhaps a feasible means of propelling such an air-ship would be by a kind of trolley system where the rod would hang down from the car to the stretched wire, instead of extending upward. This is an idea which I would recommend to inventors.”
It is most interesting to watch Professor Bell as he talks about the great inventions which he sees with prophetic eye in store for the world. He has the happy faculty of expressing great ideas in simple words, and there is nothing ponderous in his speech. He is as enthusiastic as a school-boy thinking of the kite he will make as big as a barn-door. His black eyes flash, and they seem all the blacker contrasted with his white hair; the words tumble out quickly, and those who have the good fortune to listen are carried away by the magnetism of this great inventor.