of results must be infinite before we could arrive at a full forecast of future combinations; the wonder is that there is as much certainty concerning human action as there is; and assuredly the older we grow the more certain we feel as to what such and such a kind of person will do in given circumstances; but this could never be the case unless human conduct were under the influence of laws, with the working of which we become more and more familiar through experience.

‘If the above is sound, it follows that the regularity with which machinery acts is no proof of the absence of vitality, or at least of germs which may be developed into a new phase of life. At first sight it would indeed appear that a vapour-engine cannot help going when set upon a line of rails with the steam up and the machinery in full play; whereas the man whose business it is to drive it can help doing so at any moment that he pleases; so that the first has no spontaneity, and is not possessed of any sort of free will, while the second has and is.

‘This is true up to a certain point; the driver can stop the engine at any moment that he pleases, but he can only please to do so at certain points which have been fixed for him by others, or in the case of unexpected obstructions which force him to please to do so. His pleasure is not spontaneous; there is an unseen choir of influences around him, which make it impossible for him to act in any other way than one. It is known beforehand how much strength must be given to these influences, just as it is known beforehand how much coal and water are necessary for the vapour-engine itself; and curiously enough it will be found that the influences brought to bear upon the driver are of the same kind as those brought to bear upon the engine—that is to say, food and warmth. The driver is obedient to his masters, because he gets food and warmth from them, and if these are withheld or given in insufficient quantities he will cease to drive; in like manner the engine will cease to work if it is insufficiently fed. The only difference is, that the man is conscious about his wants, and the engine (beyond refusing to work) does not seem to be so; but this is temporary, and has been dealt with above.

‘Accordingly, the requisite strength being given to the motives that are to drive the driver, there has never, or hardly ever, been an instance of a man stopping his engine through wantonness. But such a case might occur; yes, and it might occur that the engine should break down; but if the train is stopped from some trivial motive it will be found either that the strength of the necessary influences has been miscalculated, or that the man has been miscalculated, in the same way as an engine may break down from an unsuspected flaw; but even in such a case there will have been no spontaneity; the action will have had its true parental causes; spontaneity is only a term for man’s ignorance of the gods.

‘Is there, then, no spontaneity on the part of those who drive the driver?’

Here followed an obscure argument upon this subject, which I have thought it best to omit. The writer resumes: ‘After all then it comes to this, that the difference between the life of a man and that of a machine is one rather of degree than of kind, though differences in kind are not wanting. An animal has more provision for emergency than a machine. The machine is less versatile; its range of action is narrow; its strength and accuracy in its own sphere are superhuman, but it shows badly in a dilemma; sometimes when its normal action is disturbed, it will lose its head, and go from bad to worse like a lunatic in a raging frenzy; but here, again, we are met by the same consideration as before, namely, that the machines are still in their infancy; they are mere skeletons without muscles and flesh.

‘For how many emergencies is an oyster adapted? For as many as are likely to happen to it, and no more. So are the machines; and so is man himself. The list of casualties that daily occur to man through his want of adaptability is probably as great as that occurring to the machines; and every day gives them some greater provision for the unforeseen. Let anyone examine the wonderful self-regulating and self- adjusting contrivances which are now incorporated with the vapour-engine, let him watch the way in which it supplies itself with oil; in which it indicates its wants to those who tend it; in which, by the governor, it regulates its application of its own strength; let him look at that store-house of inertia and momentum the fly-wheel, or at the buffers on a railway carriage; let him see how those improvements are being selected for perpetuity which contain provision against the emergencies that may arise to harass the machines,