HERSCHEL.

CHAPTER XII.

THE HOPE OF PROGRESS.

There are two lines, if not more, in which we may look forward with hope to progress in the future. In the first place, increased knowledge of nature, of the properties of matter, and of the phenomena which surround us, may afford to our children advantages far greater even than those which we ourselves enjoy. Secondly, the extension and improvement of education, the increasing influence of Science and Art, of Poetry and Music, of Literature and Religion,—of all the powers which are tending to good, will, we may reasonably hope, raise man and make him more master of himself, more able to appreciate and enjoy his advantages, and to realize the truth of the Italian proverb, that wherever light is, there is joy.

One consideration which has greatly tended to retard progress has been the floating idea that there was some sort of ingratitude, and even impiety, in attempting to improve on what Divine Providence had arranged for us. Thus Prometheus was said to have incurred the wrath of Jove for bestowing on mortals the use of fire; and other improvements only escaped similar punishment when the ingenuity of priests attributed them to the special favor of some particular deity. This feeling has not even yet quite died out. Even I can remember the time when many excellent persons had a scruple or prejudice against the use of chloroform, because they fancied that pain was ordained under certain circumstances.

We are told that in early Saxon days Edwin, King of Northumbria, called his nobles and his priests around him, to discuss whether a certain missionary should be heard or not. The king was doubtful. At last there rose an old chief, and said:—"You know, O King, how, on a winter evening, when you are sitting at supper in your hall, with your company around you, when the night is dark and dreary, when the rain and the snow rage outside, when the hall inside is lighted and warm with a blazing fire, sometimes it happens that a sparrow flies into the bright hall out of the dark night, flies through the hall and then flies out at the other end into the dark night again. We see him for a few moments, but we know not whence he came nor whither he goes in the blackness of the storm outside. So is the life of man. It appears for a short space in the warmth and brightness of this life, but what came before this life, or what is to follow this life, we know not. If, therefore, these new teachers can enlighten us as to the darkness that went before, and the darkness that is to come after, let us hear what they have to teach us."

It is often said, however, that great and unexpected as recent discoveries have been, there are certain ultimate problems which must ever remain unsolved. For my part, I would prefer to abstain from laying down any such limitations. When Park asked the Arabs what became of the sun at night, and whether the sun was always the same, or new each day, they replied that such a question was foolish, being entirely beyond the reach of human investigation.

M. Comte, in his Cours de Philosophie Positive, as recently as 1842, laid it down as an axiom regarding the heavenly bodies, "We may hope to determine their forms, distances, magnitude, and movements, but we shall never by any means be able to study their chemical composition or mineralogical structure." Yet within a few years this supposed impossibility has been actually accomplished, showing how unsafe it is to limit the possibilities of science. [1]

It is, indeed, as true now as in the time of Newton, that the great ocean of truth lies undiscovered before us. I often wish that some President of the Royal Society, or of the British Association, would take for the theme of his annual address "The things we do not know." Who can say on the verge of what discoveries we are perhaps even now standing! It is extraordinary how slight a margin may stand for years between Man and some important improvement. Take the case of the electric light, for instance. It had been known for years that if a carbon rod be placed in an exhausted glass receiver, and a current of electricity be passed through it the carbon glowed with an intense light, but on the other hand it became so hot that the glass burst. The light, therefore, was useless, because the lamp burst as soon as it was lighted. Edison hit on the idea that if you made the carbon filament fine enough, you would get rid of the heat and yet have abundance of light. Edison's right to his patent has been contested on this very ground. It has been said that the mere introduction of so small a difference as the replacement of a thin rod by a fine filament was so slight an item that it could not be patented. The improvements by Swan, Lane Fox, and others, though so important as a whole, have been made step by step.

Or take again the discovery of anaesthetics. At the beginning of the century Sir Humphrey discovered laughing gas, as it was then called. He found that it produced complete insensibility to pain and yet did not injure health. A tooth was actually taken out under its influence, and of course without suffering. These facts were known to our chemists, they were explained to the students in our great hospitals, and yet for half a century the obvious application occurred to no one. Operations continued to be performed as before, patients suffered the same horrible tortures, and yet the beneficent element was in our hands, its divine properties were known, but it never occurred to any one to make use of it.