dinal, and figure 2 a transverse section of a | specting the best methods of tempering steel urges the fire in the ordinary manner, and the with the novel arrangement here presented. boiler arranged according to this invention. instruments. Numerous recipes may be found escaping gases from the fire… … taarket; therefore, unless tool makers have a that a more perfect apparatus, and careful Soule, Amsterdam, N. Y., or E. B. Earle, at heated condition into the ordinary tubes, knowledge of their various qualities, and pur- experiments were determined upon. Wethen E, through the sides of which they…
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