. The science of railways . Fig. 138. LOW POXY SWITCH STAND. Fig. 139. LOW PONY SWITCH STANDWITH SAFETY BOTTOM CAP. STANDARDS OF CONSTBUCTIOX. 239 prevent the signals on other switch stands frombeing seen. Figs. 137 to 140 illustrate such stands.

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1900