. The science of railways . Fig. 325. VIEWS OF DIFFERENT STYLES OP BRIDLE RODS AND METHODSOF CONNECTING THEM TO THE RAIIi. Frogs.—Frogs were discussed in the chapter onStandards; Figs. 326 and 327 illustrate twostyles of yoked frogs. One is made by the Ram-apo Iron Works, and the other Strom frog byPettibone, ]\Iulliken & Co. Both aim to prevent. Fig. 326. RAMAPO YOKED FROG. MAINTENANCE OF WAT. 377

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1900