Heating conservatories.— RIDDELL'S PATENT SLOW COMBUSTION BOILER for WanningConiervatorie*, Eutrancehalls, the ..
... SLOW COMBUSTION BOILER for WanningConiervatorie*, Eutrancehalls, the CIRCULATION HOT WATER, is portable and requires no brickwork s- lling, hut is ready at connected with the bot-waUr pipes. It will keep in fulla. Hon 12 to 21 hours without attention; ...