Document ppnpg57g96nvLQXjbEdVjoBwD

**"*!*+ 1 0 Parti--MONDAY, JULY17,1950 a,,***., . ' * L-Og^ ttgglgg Citt lCg ..-sr One Smog Cause B * Traced to Auto , Ri " h en / `' < - 'v ' ' ' S '- ' v wh(| agei One cause of smog has be&n Tl [ 1traced, directly to the exhaus halli fumes of automobile engines. to yl This was announced yesterday The) by scientists of the Stanford Uni and] versity Research Institute which foreI has been studying Los Angeles smog for the past three years in a program sponsored by the Western Oil & Gas Association. The announcement said crys his Al ,awa| idea tals of ammonium sulphate, am minium nitrate, calcium sulphate and barium sulphate have been found in Los Angeles air and have been traced to combustion gases, including automobile ex hausts. . ' New Technique As far as is known, the auto mobile has not previously been shown as a producer of ammonia compounds. The development of a new technique for chemical analysis of single small crystals under the microscope lens hah aided in isolating and identify Mi IliiifiSgilli:: ing the crystals. 1 .Under the direction of -Robert Benoliel, manager of the insti . - a j r t i T % :' ; tute's Paskdena laboratories, mist .. : t \'Civ, / * **; particles and crystals from ex hausts have been carefully coir mgBBM & iff .;-r *t .Vf **-'^' lected in recent months and have been shown to form heavy de posits of ammonium nitrate on laboratory slides. ' AN D TH EN I T W EN T FW H USSSH !-- Art hur H arper, 9, right, shows just how well they were doing in first cake- baking effort in neighboring.home before oven blew up. Brother Rollo wasn't hurt. But they'll both have to pay homeowner from allowance. i Times photo Additional studies indicate thatliquid condensate from automo bile exhaust fumes becomes! strongly acidic on evaporation. Under the microscope the sub-1 Boys' Cooking Lesson Oklahoma Owes stance appears to be coated with a tough, skinlike material like ' f Repeater Prisoner that on droplets collected from; IIp H Los Angeles general atmosphere! Goes Over W it h a Bang 20 Days in Jail during smog conditions. mcr sim M A' p i t y . duly 16 Davenport Yields Nobody knew the Harper kidsi and the - were coming so thev h--' ' . ., . `heir own r-' K Z 0004,297