![The Saturday evening post. ON every Ton Tested Tubeyou will find the namePennsylvania.i In every Ton Tested Tube youwill find those unusual ser- vice qualities which makethat name what it is today. The Saturday evening post. ON every Ton Tested Tubeyou will find the namePennsylvania.i In every Ton Tested Tube youwill find those unusual ser- vice qualities which makethat name what it is today.](https://c8.alamy.com/comp/2AGDXEG/the-saturday-evening-post-on-every-ton-tested-tubeyou-will-find-the-namepennsylvaniai-in-every-ton-tested-tube-youwill-find-those-unusual-ser-vice-qualities-which-makethat-name-what-it-is-today-yet-ordinary-makes-cost-ap-proximately-the-same-pennsylvania-rubbercompany-gf-america-jeannette-pa-direct-factory-branches-and-service-agencies-throughoutthe-united-states-and-canada-export-dept-woolworth-bldg-new-york-city-made-by-the-makers-of-vacuumcup-cord-and-fabric-tires-no-the-saturday-evening-post-november-6-1920-suprememargarine-the-saturday-evening-post-2AGDXEG.jpg)
The Saturday evening post. ON every Ton Tested Tubeyou will find the namePennsylvania.i In every Ton Tested Tube youwill find those unusual ser- vice qualities which makethat name what it is today.
![The Locomotive . be transparent to the X-rays, and vice versa. Professors Rowland and Carmichael have carefully investigated the source of the X-rays, and their conclusions concerning this point differ widely The Locomotive . be transparent to the X-rays, and vice versa. Professors Rowland and Carmichael have carefully investigated the source of the X-rays, and their conclusions concerning this point differ widely](https://c8.alamy.com/comp/2CDCC88/the-locomotive-be-transparent-to-the-x-rays-and-vice-versa-professors-rowland-and-carmichael-have-carefully-investigated-the-source-of-the-x-rays-and-their-conclusions-concerning-this-point-differ-widely-from-those-reached-byroentgen-himself-they-find-that-in-some-tubes-the-rays-emanate-from-the-anode-orpositive-electrode-and-that-the-cathode-ray-has-nothing-to-do-with-them-so-broad-adifference-as-this-in-the-results-reached-by-different-competent-observers-suggests-thatin-all-probability-the-form-of-the-tube-has-something-to-do-with-the-place-where-therays-originate-we-need-say-2CDCC88.jpg)
The Locomotive . be transparent to the X-rays, and vice versa. Professors Rowland and Carmichael have carefully investigated the source of the X-rays, and their conclusions concerning this point differ widely
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