Error is propagated with the rapidity of lightning; before it every obstacle disappears, and popular favor seems to welcome it. Truth, on the contrary, is received with indifference, often even with doubt, suspicion, and distrust. Indeed, how often have we not seen the author of a discovery which, having been accepted and realized ought to have advanced the public good and increased the general welfare, come into contact with the hatred, the ignorance, and the envy, and thus become the laughter of fools and the jest of the wise. To some the inventor seemed without good sense; to others an ignoramus. Too feeble to struggle against all, he died broken hearted, and left to his powerful antagonists the glory of having, perhaps for ages, buried his discovery, and to those who bring to perfection cities and fields the deprivation of a good up to that time unknown. If more happy than those martyrs for a new idea, I should reach, at last, that which concerns me, after twelve years of incessant struggles, to cause the truth to appear to the eyes of all, I should have nothing more to desire. Nothing would remain for me, except to bless the generous hearts which shall have aided me in triumphing over routine and error; then on quitting this world, only to bequeath the worthy men who have so bravely encouraged and seconded my efforts, the task of simplifying my discovery, and rendering my method popular to cause the analytical knowledge of cattle to penetrate even into the most obscure hamlet, and while dividing thus with me the glory of having done this good, their names will be held in grateful remembrance by future generations; such has been the idea which has guided every moment of my life, all the efforts of my mind. For nearly twelve years, since I have given my method to the public, through a first edition of my “Treatise on Milch Cows,” the savants and the practitioners have been greatly prepossessed with it. When they have seen me make a successful application before them of my system, by a single inspection of animals which I saw for the first time, they have expressed a lively surprise. In the vegetable kingdom, skillful nurserymen have distinguished more than eighty different orders of pears of summer, of autumn, and of winter; each of these orders has its distinctive characteristics, as many for the shape and the taste of the fruit, as for the time of ripening. And when a tree-grower or an amateur is sufficiently skillful, he distinguishes marvelously all these species one from another by a single inspection, and at whatever time of year it may be. He knows equally well what exposure it is necessary to give to each of them to obtain exquisite fruits. My first studies had been directed toward arboriculture. I have practiced with my father during many years. My principal occupation was the cutting of trees, grafts, both splits and bandages, and by studying vegetables, I had acquired the idea of and an insight into classifications.