nder pressure against be kept at a uniform distance from the boiler by runners or studs, and the mineral wool stuffed under as the lagging is puton. The strips forming the lagging should be tongued ing a spray of small globules or shot, which, on becoming detached from the larger mass, stick, as i… … 21 feet above the floor, and a sheet iron extension 10 feet long reaches to the slag car. The frame of the building is covered but must simply be loosely pressed, so as to thoroughly fill on the interior with thin sheet iron. The front of the the open spaces. For the up-take in marine boilers,…
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