. Science of railways . Fig. This air is heated by the Arch mixing thoroughly in the flame. Nothing but the white hot flame can possibly reach the flue sheet. LOCOMOTIVE APPLIANCES. 717 h^^z^p^ . 3Ti/aC ^STT/A^^. kr-r-y-f^ ^-Ti/s£ sem//< f^^^^T—^^—%—^r~^^ •s-T(/ae serr/A/<f. Fig. 7. Security Sectional Arch showing arrangement for various widthsof fire boxes and ideal spacings for Arch tubes.

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Keywords: ., bo, bookcentury1900, bookdecade1910, bookidscienceofrailway14kirk