« e Bev str. Pipk A Closeiv allied procedure Wlug pvather than roan color reapents for detecting the presenre tic compounds in the filter stoeran, said Dr. rink. hand ton aetectia, It shevs a promise of x aed e / 4 : ang perhaps even the accurate deterafination of loterally poures s ef substnces present in « speck of tissue so minute as to be practically invisible even under 4 microscope. uct precedur2 might well lezn 4 to Pe luable a,plications in the clinical 23 of many diseases, said Dr. Fink. RaSF 9/ 4f ‘2 o