62 DESCRIPTION or a 
falling afhes. It is concealed when the {mall fliding plates 
Y Y, figure 12, are fhut together. 
I, I, I, I, figure 8, is a niche built of brick in the chim- 
ney and plaftered. It clofes the chimney over the vafe, but 
leaves two funnels one in each corner communicating with 
the bottom box K K, figure 2. 
DIMENSIONS of the PARTS. 
Feet, In. 
Front of the bottom box, - - a he 
Height of its partitions, - =. ort hige 
Length of N° 1, 2, 3 and 4, each, - By bg 
Length of N° 5 and 6, each - - one 
Breadth of the paflage between N° 2 and 3, 0 6 
Breadth of the other paflages each, ~ olhage 
Breadth of the grate, - - o 8 6¢ 
Length of ditto, - - - o § 
Bottom moulding of box C, fquare, - Tis6 
Height of the fides of ditto, - - OW 
Length of the back fide, - - oO 10 
Length of the right and left fides, each, - o a 
Length of the front plate ch where caaeots oO II 
The cover D, fquare, oO 12 
Hole in ditto, diameter, - 0423 
Sliding plates Y Y their length, ean St hho 
ta -———their breadth, each, - o 4t 
Drawer G, its length, - - - TNO 
—breadth, - - - of) ise 
ela ak Jel . ~ oota 
-— depth of its inwiiel end, only, o 1 
Grate H in the vafe, its diameter to the extre- 
mity of its knobs, ~ - - Oy ig. 
Thicknefs of the bars at top, - - on Oe 
-——___——at bottom, lefs,5 - 0 o 
Depth of the bars at the top, - - ori ot 
Height of the vate, - ~ - 1 6 
Diameter of the opening O, O,in theclear, o 8 
Diameter 
