328 THK I'KESKNCE. TVrK, AND P088IBLK SIGNIFlCANli: OV LACTOSE-FEKMK.S TI.NO IIACI 



A 11 11 1 T I o N A r. Experiments- -continued 



B. After nxposiire to sunlight for 24 lidnrn 



Group I, nil 



Group II, 1 



Group III, 9 



Group IV, nil 



G. After exposure to sunlight for 48 hours 



Group I, 1 



Group II, uil 



Group III, nil 



Group IV, 



