April 29. 
COUNTRY GENTLEMAN’S COMPANION. 
83 
BOILER. 
Vertical section of copper boiler in galvanised iron casing, with 
flow-and-return pipes eased. 
Fig. 2. 
Elevation of casing 
showing hole for 
coals. 
Seale 4" to l'.O". 
Fig. 1. 
e. Hot air casing. 
f. Flow-pipe. 
r. Return-pipe. 
Fig. 3. 
Horizontal section 
through centre of 
boiler. 
H 
Elevation of water-tank in inner greenhouse (n.) used 
for heating a secondary inner forcing case, showing 
connection with flow-and-return pipes.—Scale 
Sections of hot-watcr-tank in Transverse, 
library (u). 
Scale X '• 
Section of expansion cylinder (f), and means of 
supply. Scale X'» to 1 loot. 
Vertical section through 
o - - - p, showing hot¬ 
air casing, containing 
flow-and-return pipes, 
suspended from floor 
joist. 
Scale i". to 1". 
Vertical section 
through i - - - k, 
showing flow-and- 
return pipes. 
Scale to X 1 , to l". 
