IDEAL Type ZF 
HeatcMaaiine 
S ILENTLY sends a steady flow of genial warmth to all rooms. 
The owner is gratified not only by the continuous automatic 
day and night service, but by the knowledge that the fuel burned 
is utilized to its utmost heating value. 
An average fuel saving of 33^% is shown by the tabulated results 
of several thousand IDEAL Type'A” Heat Machine installations. 
Write for catalog with test-chart records of efficiency and economy 
A merican R adiator C ompany 
Dept. 23 • NEW YORK and CHICAGO 
Sales Branches and Showrooms in all large cities 
Makers of the world'famous IDEAL Boilers and AMERICA N Radiators 
A FAMOUS French 
- sculptor gave the 
final touch of grace and 
beauty to the American 
CORTO RADIATOR shown 
in the illustration. 
It has found great favor 
among owners and archb 
teds because it occupies 
a third less space and has 
greater radiating power 
than the ordinary types. 
