‘… having about 1 square foot of grate area to 45 square feet of
heating surface.’
The references to a ‘Six Inch Flue Boiler’ in Fig. 32 and the Index may
mean ‘Six Flue Boiler’, these instances have not been changed.
In the chapter ‘CHEMISTRY OF THE FURNACE’, the opening paragraph
has a number of apparent typographical errors relating to names of
substances. These have been left as printed and are:-
naphthaline typographical error for naphthalene
alizarine „ „ „ alizarin
toludine „ „ „ toluidine
anthracine „ „ „ anthracene
toluches „ „ „ toluene
saccharine „ „ „ saccharin