re is a complete circula-tion of water, which is an important factor in keepingall surfaces at a uniform temperature. The combina-tion of two sets of flues with an auxiliary combustionchamber results in utilizing more of the heat in thegases, and this, together with the arrangement of… … THE REGAN LOCOMOTIVE BOILER. of the seams, and the flues being shorter than in pres-ent boilers, will necessarily have a longer life. STATION INDICATOR.Our illustration shows a simple and durable appar-atus which is designed for use in railroad cars andstreet cars to display the name of the next…
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![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-458-228.webp)
