Show detecting invisible fingerprints officers of the san francisco bu reau of identification have it Is said perfected a process by which they de invisible fingerprints the dis covery consists of a chemical solution that is kept secret in a recent murder case a former suitor of the murdered girl was suspected lie ile dicapi eared mysteriously after the crime bat but the detective found a time table in the room wh where e r e the you young n g ma man n had lived the new solution was sprayed on an the pages of the booklet gradually green marks began to develop and they proved to be bloodstained finger prints this was three days after the murder A streak made by a finger soon dis appeared at the end of it was a clearly defined fingerprint finger print it pointed straight to a small village in ohio where the detectives journeyed and arrested their man |