shoes connected as shown in the illustrations. inner surface is made up of seventeen hundred and Both the sectional and third-rail installations were eighty-eight small mirrors, all arranged so that they completed under the supervision of Mr. John McLeod concentrate the sun upon the central or… … BOILER AND CONNECTIONS. tube and returns again from the condenser to cave mirror of very large size, but this was finally overcome by having the surface of the concave the boiler in the form of water, so that the boiler mirror covered with small pieces of glass, or mirrors, is kept automatically…
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