Poisoning trials, 171 Police dogs, 32 Portraits, identification by, 27, 28 Preservatives in food, 224 Purkenje's finger prints, 54 Rudd, trial of Mrs., 138 Russell, Lord William, 4 Scientific assistance for prisoners, 13 ---- deduction, 6 ---- proof, 12 Smethurst, trial of, 19 Somerset, Countess of, 179 Spencer Cowper, trial of, 15, 85 Standards for food, 234 Suffolk witches, 172 Swan and Jefferies, trial of, 4 Sympathetic inks, 130 Systems of identification, 48 Tawell, capture of, 24 ---- trial of, 187 Telectrograph, 26 Telegraph, capture by aid of, 24, 25 Tichborne case, 46 Turner, Anne, 172, 177 Typewritten matter, 97 Weston, trial of, 172, 176 Whalley will case, 145 Witnesses as advocates, 19 Wireless telegraphy, 25, 27 Witchcraft and poisoning, 172 Wood, trial of, 121 Writers' cramp, 78 Yarmouth murder, 34 THE END _Press of Isaac Pitman & Sons, Bath, England._ End of Project Gutenberg's Science and the Criminal, by C. Ainsworth Mitchell