Show m vu One of the big causes c causes uses of of delay or-delay delay Inthe in inthe inthe the movement of freight Is the heating heatIng heat heat- ing lag of the journal boxes of car axles commonly called hot boxes When I one Journal box In a train gets seriously seri serI- hot It Is necessary to stop the whole movement of traffic until the condition can be remedied This his makes very timely a series serles of tests now being carried on at nt Purdue university university university uni uni- to determine accurately the the benefit to be derived d by by using ventilated ventilated ventilated venti venti- lids Instead of the solid lids now almost universally used u ed on the axle journals The tests I consist of hour eight-hour runs with heavy loads at high speed during which accurate records are l kept ept of the temperature a attained in each each class class of apparatus |