London : Longman, Rees, Orme, Brown, Green, and Longman · leaf 245
open below, and communicate with the back of the grate justabove the floor. The grates, of which there are two in each apartment, are registers,with air-chambers runningcompletely round the backand sides, but separated inthe middle. Fig. 110. showsthe plan of the grate andjambs, and Jig. 111. the…
Architecture
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![An illustration from The gentlemens or builders companion : containing variety of usefull designs for doors, gateways, peers, pavilions, temples, chimney-pieces, slab tables, pier glasses, or tabernacle frames, ceiling peices [sic] &c. (1739)](https://img.insideoutlibrary.com/img/200/ia-gentlemensorbuil00jone-90-55.webp)
