12 Dogs Develop Lung Cancer 1 In Group of 86 Taught to Smoke
Drs E C Hammond and O Auerbach rept 12 of 86 beagles trained to smoke up to 9 cigarettes a day during 875-day experiment at Veterans Adm Hosp, E Orange, NJ, developed lung cancer, news conf; illus; they note it is 1st time malignant tumors have been produced in large animals by exposing them to cigarette smoke; rept cigarettes with filter tips were less harmful to dogs than nonfilter cigarettes; rept death rate for smoking dogs was 'significantly' higher than among 8 control dogs that did not smoke; say 28 of 86 smoking dogs died of diseases that rarely kill dogs; say lung diseases and their resultant strain on heart were principal causes of death; hold degree of lung damage progressed with duration of smoking; experiment detailed; charts show its organization and results; Dr R Yesner backs study's conclusions; Amer Cancer Soc holds findings refute cigarette indus contention that there is no link between cancer and smoking; Tobacco Inst holds it is impossible to draw 'meaningful' parallel between experiment and human smoking