The Architectural magazine . 112 cheap stone or slate, which may be chamfered off so as to forma neat finish to the plinth round the outside of the various intervals, I should propose that small openings com-municatinor between this channel and the interior of the build-ing (as shown at b) should be made; so that a current of airfrom the exterior may be driven through the channel and open-ings under the floors, in order to sufficiently ventilate the same. The only increased expense will be the difference between acourse of stone or slate and a course of bricks; as leaving thevacanc
The Architectural magazine . 112 cheap stone or slate, which may be chamfered off so as to forma neat finish to the plinth round the outside of the various intervals, I should propose that small openings com-municatinor between this channel and the interior of the build-ing (as shown at b) should be made; so that a current of airfrom the exterior may be driven through the channel and open-ings under the floors, in order to sufficiently ventilate the same. The only increased expense will be the difference between acourse of stone or slate and a course of bricks; as leaving thevacancy or channel will be, if any thing, a saving. Clapha?n, May, 1834. Art. VI. On a Method of curing Smoky Chimneys, and of ventilating Rooms. By Mr. Saul. I HEREWITH send you a sketch of a plan for curing smokychimneys. It is the invention of Mr. R. Hall of this town, aVol. I. —No. 6. r 23t CastIron Angles for Outside professed chimney doctor. Ihave seen several rooms wliereit has been adopted, wliicli liavebeen completely cnred of smok-ing. As the plan is very simple,it may be executed at a triflingexpense. A current of air passes overthe door behind the architraveor moulding {a a, Jig. 113.);the arrows show the way bywhich the air enters; and, as itvises direct to the ceiling, aperson sitting in the room feelsno draught whatever. This plan may be adoptedwithout disfiguring the room inthe least, as the architrave istaken off and rounded on theback part, and is then replacedin such a manner that the aper-ture by which the air enters isnot seen. Sulyard Street, Lancaster,May 3. 1834. Art. VII. On Cast-Iron Angles for Outside Doors. By C. , Esq., Civil Engineer. I HAVE often thought that outside doors might be greatly im-proved by having cast-iron angles at the bottom, in the followingmanner : — ^^fg- 114., a is the upright style ; b, the bottom rail;
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