o an extent that slightly through the narrow annular openings would render it impossible to breathe at the thus allowed, as also through the small open- height of a man’s head above the floor, there ing, N, described ; but when the pressure be- is in nearly every instance a draft of cool, too small… … the like, as the device here presented. low water, becomes highly heated ; andexcept may be substituted in its stead. The tubes C reach to very near the floor, Fig. 1 is a vertical section, fig. 2 a hori- for the fact that the engineer is generally in The inventor is Joseph C. Day, of Hacketts- and…
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