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Over that subtle something known in all languages as vitality, expressive of the intensity of feeling, thought and reactions in cells, they rule supreme. Gay vivacity and grim determination, the temperament of a Louis XIV, and the soul of a Cromwell, are the crystallizations of these chemical substances acting upon the brain.
Now, whether the chemical action involved in this decomposition of sugar had required for its completion one day, or one month, or one year, such a factor was of no more importance in this matter than the mechanical labour required to raise a ton of materials from the ground to the top of a house would be affected by the fact that it had taken twelve hours instead of one.
Nay, so early as ten centuries ago it was known that the differences between the several chemical and physical forces depend on the mode of vibration of the etheric particles, which is for each specifically different.
But behind all this physical and chemical material in which and through which the farmer and his men are working stand the farmer himself with his intelligence, and his men themselves with their lack of intelligence. This human factor, this bundle of ideas and volitions and feelings and judgments, must ultimately be the centre of the whole process.
Now, however, guided by the views which Clausius and Williamson have given us of the continuous interchange of partners between the compound molecules constituting chemical compounds in the gaseous state, we see in Deville's theory of dissociation a point of contact of the most transcendent interest between the chemical and physical lines of scientific progress.
The bean has been able to perform this great chemical feat by the help of its green colouring matter, or chlorophyll; for it is only the green parts of the plant which, under the influence of sunlight, have the marvellous power of decomposing carbonic acid, setting free the oxygen and laying hold of the carbon which it contains.
New forms of chemical weapon will evolve. Now it is true that almost every form of warfare which one can conceive depends for success on some sort of projector, and it is also true that the manufacture of these projectors can be controlled, because it is usually so complicated. These remarks apply, for example, to the manufacture of a field or heavy gun.
Several times both listened, and they agreed that some chemical process was taking place in the bowels of the earth. "Then the volcano is not totally extinct?" said the reporter. "It is possible that since our exploration of the crater," replied Cyrus Harding, "some change has occurred. Any volcano, although considered extinct, may evidently again burst forth."
It is hardly fair even to complain of it for yielding a poisonous oil, when these two virtuous plants to say nothing of the peach and the almond will under sufficient chemical provocation do the same thing. Two drops of nicotine will, indeed, kill a rabbit; but so, it is said, will two drops of solanine.
The hydrogen will burn in the oxygen, giving heat; and if the two gases are mixed in the right proportions and then ignited, they explode with violence. This energy was derived from the electricity. It was stored by decomposing the water. Energy is stored by chemical means by causing it to do work in opposition to the force of chemism, or chemical affinity.
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