80 



GARDEN WALLS. 



Fig. 51. 

 j 



5 



03 



0: 



headers laid across and meeting in the 

 middle at every 3 feet, which binds the 

 wall; these headers, being 10 

 inches long, have 2 inches 

 cut off the end of each, and 

 have a whole brick laid over 

 them ; the open space below 

 is occupied with the hot- 

 water pipes, as in the an- 

 nexed diagram, fig. 51. The 

 same process is carried on 

 upwards, only changing the 

 place of the headers so that 

 they shall not be imme- 

 diately above each other. 

 The three last courses at 

 the top are built solid, to 

 prevent the escape of heat 

 through the coping. 



Walls built upon this 

 [zr 1 1—1 principle, as well as figs. 53 

 and 54, afford an equal degree of heat to 

 both surfaces, and hence are valuable for 

 east or west walls. 



Fig. 52 represents another form of this 

 wall, adapted to south aspects, or where 



tv m n- ,o the heat is re- 



Fig. 52. Fig. 53. • -i 



& 5 quired on one 



side only — the 

 front being 

 in 5-inch and 

 the back in 

 15- inch work. 



Fig. 53 re- 

 presents the 

 section of a 

 hollow wall, 

 the sides of 

 which are tied 

 together by 

 means of pieces 

 of thick hoop- 

 iron bent at 

 the ends and 

 turned down 

 3 inches on the outer sides. And fig. 54 

 shows another economical wall tied in a 

 somewhat similar manner ; but to prevent 

 the iron from being seen, the bent part is 

 let 2 inches into the middle of the bricks, 

 a portion of them being pierced with holes 

 before they are put into the kiln. _ Iron 

 wire, half an inch in diameter, will be 

 found sufficiently strong for this purpose. 

 Such walls as the two last may be heated 

 by causing the smoke and hot air to pass 

 through them from top to bottom ; and 



Fig. 54. 



the soot can be cleared out by removing 

 portions of the coping and 

 brushing it down to the 

 bottom, from whence it 

 can easily be removed by 

 making openings at con- 

 venient distances, or better 

 by having openings, with 

 sliding cast-iron covers, 

 built in the walls near the 

 ground. Such walls may 

 also be heated by hot-water 

 pipes, or open gutters run- 

 ning along the bottom. 

 These walls are an invention 

 of our own, with a view to 

 save material — 1210 bricks 

 only being required for a 

 rod of work, while, at the 

 l — 1 — ' — ' — L - J same time, provision is 

 made, as described, for heating them. 



Fig. 55 represents the cross and longi- 

 tudinal sections of a hollow wall heated 



Fig. 55. 



V" 



upon the tank principle, and as exempli- 

 fied by us in the garden of James M'Fee, 

 Esq., of Langhouse, near Greenock, for 

 the first time, where it has given every 

 satisfaction. We also had the honour to 

 furnish the late Earl Talbot with draw- 

 ings for a similar wall for his garden at 

 Ingestrie Hall, Staffordshire. 



These walls, as in the preceding^ ex- 

 amples, are constructed of 4-inch sides, 

 and are 12 feet high, and 18 or 20 inches 

 broad, according to the length of the 



