This is nature's method of identification, and no record can be found of the digits of two persons having exactly the same characteristics. Numerous instances could be cited of twins and triplets whose finger prints afforded the only means of distinguishing one from the other. [Illustration: MAGNIFIED FINGER PRINT The above is an enlarged print of a right index finger, which we classify as an Ulnar Loop. Loops on different fingers are not all alike, but vary in many important characteristics, so it is a very easy matter to distinguish one from another.] [Illustration: FINGER PRINT OUTFIT] INSTRUCTIONS FOR TAKING FINGER PRINTS. Instruments required: A piece of tin, ordinary printer's ink, and a 10-cent rubber roller are all the tools necessary for getting the impression. It requires no special training to take finger impression, and any rural constable can, with ten minutes' practice, take a set of good finger prints in five minutes. After having a week's practice he could take them in three minutes. SCOTLAND YARD METHOD. At Scotland Yard a metallic brace is in use for the purpose of forcing refractory prisoners to leave correct impressions upon the records. One application of this brace is persuasive enough to cause the culprit to hasten to comply with a request for his signature. A small slab stone is covered with ink, which is distributed with a sprayer, and the prisoner is compelled to place his fingers in the ink and then firmly implant them upon paper. On a regular prescribed form impressions are taken so that the flexure of the last joint shall be at a given point on the record. The digits are taken singly and then an imprint is made of all of them simultaneously. When the prisoner has finished imprinting the record he is called upon for his signature, and immediately underneath the name, as written by himself, an imprint is left of the right forefinger. For the edification of American police, Mr. Ferrier demonstrates that upon a sheet of paper you may sprinkle some charcoal dust and press it upon the paper with your thumb and then blow the dust off and the imprint of the digit will remain. MOST POSITIVE IDENTIFICATION.