His first great "discovery" unfortunately has not yet been accorded scientific acceptance. "It is little," he says, "to have proven the existence of sensibility in animals; I have proven that sensation pertains not merely to animals, but that it also is the property of vegetables--in a word, OF EVERYTHING THAT LIVES. Everywhere it acts in the same manner, through the nerves. The entire vegetable kingdom possesses the sense of feeling" (tous les vegetaux possedent la faculte de sentier).[1] [1] "Recherches," etc., p. 13. Had Brachet confined himself solely to experiments on the sensibility of plants, we should have little to criticize. Unfortunately, however, his scientific tastes led him in another direction. He belonged to a class of men who cannot permit the most apparent fact to be taken for granted, when, at the cost of torment, it may be demonstrated--men like Magendie, who insisted on proving to his students that an animal could really feel pain by stabbing it with his knife before commencing his experiment. Brachet's problem was a simple one. We all know, for instance, that an animal--a dog--may feel an intense dislike to some particular person. Why? Because of impressions conveyed to the brain of the animal by the senses of sight and hearing. Outside an asylum for idiots, it is probable that no one ever questioned the fact. Brachet, however, would not permit his readers to accept any statement merely upon the general experience of mankind, when it might be proven scientifically, and he has described in his book the experiments by which he claims to have demonstrated his theory. "EXPERIMENT 162.--I inspired a dog with the strongest possible hatred for me by teasing it and inflicting upon it some pain every time I saw it. When this feeling had reached its height, so that the animal became furious whenever it saw or heard me, I put out its eyes [je lui fis crever les yeux]. I could then appear before it without its manifesting any aversion. I spoke, and immediately its barkings and furious movements permitted no doubt of the rage which animated it. "I then destroyed the drum of the ears, and disorganized as much as I could of the inner ear. When the intense inflammation thus excited had rendered it almost deaf, I filled its ears with wax, and it could hear me no longer. Then I could stand by its side, speak to it in a loud voice, and even caress it, without awakening its anger; indeed, it appeared sensible of my caresses! There is no need to describe another experiment of the same kind, made upon another dog, since the results were the same." By this great experiment, what valuable knowledge was conveyed? Simply that a dog, deprived of sight and hearing, will not manifest antipathy to a man it can neither see nor hear!