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; NO ere) nd ns - . Oo SS PAGE FIVE ADDITIONAL ‘QUESTIONING, COURT ‘STATED WITNESS WOULD BE ALLOWED . ; TO TESTIFY IN THIS REGARD BUT INSTRUCTED THE = JURY TI THAT ~~ WITNESS* CREDITABILITY WILL BE SAME AS ANY OTHER WITNESS. BROOKS SPENT CONSIDERABLE TIME DISCUSSING. COMPOSITION OF "LATENT FINGERPRINTS AND SPENT CONSIDERABLE TIME DEVELOPING " FACT THAT COMPOSITION OF FINGERPRINTS WOULD INCLUDE VARIOUS FOREIGN MATTERS» SUCH AS HAIR-OIL» MARGARINE OR OTHER GREASY SUBSTANCES « TESTIFIED THAT HE HAS EXPERIMENTED IN PAST bes? IN ‘EFFORT TO DETERMINE IF AGE OF LATENT FINGERPRINT CAN BE. DETERMINED AND TESTIFIED THAT WITHOUT KNOWING THE SUBSTANCE OF LATENT FINGERPRINT» THERE WOULD BE NO MEANS BY WHICH TO DETERMINE THE LENGTH OF TIME LATENT FINGERPRINT HAD BEEN ON AN OBJECT. SAID HE WOULD HAVE TO STATE THAT A FINGERPRINT EXPERT WHO LIFTED LATENT COULD HAVE AN OPINION AS TO THE LENGTH OF TIME A LATENT FINGERPRINT WAS ON AN: OBJECT. FOR INFORMATION OF BUREAU, Qi END PAGE FIVE ‘ ; ame ana dbel sm ee ig a SAS AU OA 2S | NAGI paisa res: Mea a Me OE ing ty | ete. eee ~ ee ities ay woe ee I pe LR eR PETER ETRE Om ert ep a