It follows by an easy process of reasoning that after another couple of hundred years or so, great sweeping changes should be made several times in an hour, or indeed in a second, or fraction of a second, till they pass unnoticed as the revolutions we undergo in the embryonic stages, or are felt simply as vibrations. This would undoubtedly be the case but for the existence of a friction which interferes between theory and practice. This friction is caused partly by the disturbance of vested interests which every invention involves, and which will be found intolerable when men become millionaires and paupers alternately once a fortnight--living one week in a palace and the next in a workhouse, and having perpetually to be sold up, and then to buy a new house and refurnish, &c.--so that artificial means for stopping inventions will be adopted; and partly by the fact that though all inventions breed in geometrical ratio, yet some multiply more rapidly than others, and the backwardness of one art will impede the forwardness of another. At any rate, so far as I can see, the present is about the only comfortable time for a man to live in, that either ever has been or ever will be. The past was too slow, and the future will be much too fast. The fact is (but it is so obvious that I am ashamed to say anything about it) that science is rapidly reducing time and space to a very undifferentiated condition. Take lamb: we can get lamb all the year round. This is perpetual spring; but perpetual spring is no spring at all; it is not a season; there are no more seasons, and being no seasons, there is no time. Take rhubarb, again. Rhubarb to the philosopher is the beginning of autumn, if indeed the philosopher can see anything as the beginning of anything. If any one asks why, I suppose the philosopher would say that rhubarb is the beginning of the fruit season, which is clearly autumnal, according to our present classification. From rhubarb to the green gooseberry the step is so small as to require no bridging--with one's eyes shut, and plenty of cream and sugar, they are almost indistinguishable--but the gooseberry is quite an autumnal fruit, and only a little earlier than apples and plums, which last are almost winter; clearly, therefore, for scientific purposes rhubarb is autumnal.