The cause of the total destruction may exist in a loss of polarity! We know that all organic and inorganic bodies are subject to the laws of electricity--each has its polarity. Men who are engaged in mining can testify that the stratification of the earth is alternately negative and positive. The hemispheres of the earth are also governed by the same law; for, if you take a magnetic needle and toss it up in this hemisphere, which is negative, the positive end will come to the ground first; but if you pass the magnetic equator, which crosses the common equator in 23° 28', and then toss the needle up, its negative end will fall downwards. Hence we infer that the potato has a polarity, just as man has; and this is the reason of their definite character. Take a bean, and destroy its polarity by cutting it into several pieces, as you do the potato, and all the men on earth cannot make it germinate and grow to perfection. It will die just as a man will, if you destroy the polarity of his brain by wounding it. Take an egg, and destroy its polarity by making a small puncture through it, and you can never get a chicken from it. A man or an animal will die of locked-jaw, caused by a splinter entering the living organism; and why? Because their electrical equilibrium, or their polarity is destroyed. Some of our readers may desire to know how we can prove that electricity plays a part in the germination and growth of animals and vegetables. In verification of it, we will give a few examples. A dish of salad may, by the aid of electricity, be raised in an hour. Hens' eggs can be hatched by a similar process in a few hours, which would require many days by animal heat. By the aid of electricity, water, which consists of oxygen and hydrogen, may be decomposed, and its elements set free. The poles of a galvanic battery may be applied to a dead body, and that body made to imitate the functions of life. And lastly, it is through the medium of electrical attraction which bodies have for each other, that all the chemical compositions and decompositions depend. Bodies must be in opposite states of electricity in order to produce a result. Now, if the polarity of the potato is destroyed in the manner we have just alluded to, or should it be destroyed by coming in contact with the blade of a knife, _the latter conducting off the electrical current_, or by any other means, it must deteriorate. We are told that "the potato has several germinating points, and that a part will grow just as well as the whole." Such reasoning will not stand the test of common experience.