culiar manner, and the slats connected the screw. The screw box, E, is fixedin the of the blade is allowed to escape between the largement in the holes in a few years, which by hinges, so that a durable fire and burglar plate, F, by means of a dovetail. N is a boss first and second sections, and… … the rail, and cheek or solid abutment to fit the It has an educational department connected A represents the slats of the shutter con- outside. In laying, this is fastened to the with it, for giving chemical lectures; also a nected by hinges, B, which are secured to the sleeper, in the first…
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