The admission of such testimony is, doubtless, necessary. The fields of science, art, and industry are enormous; and in each, one man during one life can only hope to acquire thorough knowledge of one small part of his particular enclosure. Hence “specialties” have arisen—the one lifework of one man. Specialties represent a movement of “from the general to the particular.” In the field of science, for instance, is the department of surgery; and of all kinds of surgeons is one particular specialist, the dentist. So in art, music is but a little part of all art, and the violinist but a specialist in music. Industry classifies into business and agriculture, each in turn susceptible of innumerable sub-divisions, each a specialty. By this arrangement it is seen that almost every man is to some degree a specialist, or should be one; therefore, when particular information is required it must be sought from the specialist. We seek to appropriate his experience, and naturally turn in our inquiry to those who seem best qualified to supply our wants. The true expert should be, then, a very particular specialist. In the field of industry and art we should require that he be experienced and successful. In science, that he possess definite knowledge—exactness. So far, no complaint whatever can be made against the employment of experts (specialists). It is a necessary thing; it occurs every day in everyday life, and their testimony is very properly allowed in criminal and other court proceedings. But it is undoubtedly wrong when used unjustly; as, for instance, by the State or a very rich man against an opponent too poor to protect himself—and the testimony of experts in handwriting is often so used. It is especially unjust when an expert on a scientific subject holds no other commission or diploma than one bestowed upon him by—himself—an expert in handwriting has no other. No one would employ a self-instructed physician, retain a self-taught lawyer, or a chemist who never went to school; in fact, the self-educated are almost excluded from the higher professions. Consider the formal course of study necessary to become a physician, a minister, or lawyer—schools and all their examinations, the four years in college, and all the examinations pertinent thereto, and then the special post-graduate courses at schools of law, medicine, or divinity. We trust and respect these professions, because we know of their preparation; this is their guarantee. They are tested over and over again to see if they can do their work. Only then do they obtain diplomas. We require this very thing from our engineers, firemen, coal miners, and accountants before they are granted a license. But the handwriting expert passes no examinations, and possesses no diploma. He need not even procure a license.