. In this we recog- The stiffness of the crown of the Birmingham holders Eastern, it will be found to have about double the nize an integral structure, not a mere collection of is secured, apart from the inherent strength of the or- columns held together by girders from top to top. capacity of the… … may communicate the results even at the risk of excit- In the drawing, one of the roller frames is shown in ing the ire of some persons. Certain colors resist light, ‘ position, secured to the upper curb. It rests on the and others do not. My collection contains about 1,600 row of steel plates…
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