W A 



W A 



fet off" four Inches on ea^h Side, 

 which will recLace it to the Thick- 

 nefs of three Bricks and an half; fo 

 that the Back-wall may be two Bricks 

 thick, which is abfolutely neceffary 

 to throw the Heat out more in Front; 

 for when the Back-walls are built too 

 thin, the Heat willefcape thro' them. 

 The Wall in Front next to the Fruir, 

 Should be only four Inches thick : 

 whereby there will be an Allowance 

 of nine Inches for the Flues, which 

 may be cover'd with ten Inch Tiles ; 

 for if they have half an Inch Bear- 

 ing on each Side, it will be furncient. 



The Ovens in which the Fires are 

 made, mutt be contrived on the 

 Back-fide of the Walls, which mould 

 be in Number proportionable to the 

 Length of the Walls. The Length 

 ufually allow'd for each Fire to 

 warm, is forty Feet; tho' they will 

 do very well for fifty Feet: but I 

 would not advife the Flues to be 

 longer than this is to each Fire ; be- 

 caufe when they are made at a great 

 Diltance, there is a Necefftty of 

 making the Fires fo much ftronger 

 to warm them ; which will occafion 

 the Heat to be too violent near the 

 Fires. Thefe Ovens mould be fhed- 

 ded over, to keep out the Wind and 

 Rain ; otherwiie the Fires will not 

 burn. Some People make thefe 

 Sheds of Timber; but it is much 

 better to build them of Brick, and 

 tile them over ; becaufe the wooden 

 Sheds will in a few Years decay, and 

 afterward will be a conftant Charge 

 to keep in Repair ; and befides, they 

 may be in Danger of firing, if great 

 Care ;s not constantly taken of the 

 Fires. As it is abfolutely neceffary 

 to have the Ovens below the Foun- 

 dation of the hrit Flues, there rnufl: 

 be Steps down into the Sheds, to 

 come to the ivJouth of the Ovens to 

 fupply the Fuel. Therefore the 

 Sheds mould not be narrower thau 



eight Feet in the Clear ; for as the 

 Steps will require four Feet Space, 

 there fhould be at leaft four Fett 

 more for the Perfon who attends the 

 Fire, to have room to turn himfelf 

 to clear out the Ames, and to put 

 in the Fuel. Where the Length of 

 Walling requires two Ovens, it will 

 be proper to have them in the M id- 

 die included in one Shed, which will 

 fave Expence, and allow more room 

 to attend the Fires ; for in this Cafe 

 the Sheds muft be at leait ten Feet 

 long, and then they need not be 

 more than fix in Breadth. The Steps 

 down into thefe mould be at one 

 End ; fo that the Door opening into 

 the Sheds, will not be oppofite to 

 the Mouths of the Ovens : whereby 

 the Fires will burn more regular ; 

 for whenever the Doors are contriv'd 

 to front the Mouths of the Ovens, if 

 the Wind fets directly againlt them, 

 it will caufe the Fire to burn too 

 fiercely, and the Fuel will be foon 

 confum'd. 



Thefe Ovens may be contrived in 

 the fame manner as thofe which are 

 already defcrib'd for Stoves : where- 

 fore I fhall not repeat it again in this 

 Place ; but muft obferve, that when 

 the two Ovens are jojn'd together, 

 there mould be a Partition-wall at 

 leaft two Bricks thick between them, 

 otherwifethe Fires will foon deiiroy 

 it; and if there mould be the leait 

 Hole in the Wall, thro' which the 

 Smoke of the two Fires can commu- 

 nicate, it will prevent their Drawing. 



The lower Flue, trro" which the 

 Smoke firil pafles from the Fire, may 

 be two Feet and an half deep ; there- 

 fore the Back-wall fhould be two 

 Bricks thick, as high as to the Top of 

 tnis Flue; and then it may heist ofrto 

 a Brick and an half Tiiickr.efs, w hich 

 muft be continued to the Top of the 

 Walk The fecond Flue, whicla 

 (hould return over the &ril> may be 

 5 C i rua4s 



