19 the blast orifice B is set much lower, and the steam is discharged through a frustum of a cone set in the upper part of the smoke-box into the short chimney. [Please select]
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The others amused themselves all around me; I found my delight in the frustum of a pyramid. [Please select]
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The form is generally conic, or rather the segment (frustum) of a cone, of which the smaller end is the bottom of the basket; and being made of all sizes, from that of the smallest cup to the capacity of five or six gallons, they answer the double purpose of a covering for the head or to contain water. [Please select]
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