Illinois Society of Architects · Chicago · leaf 548
athed until the CO:; con-tent reaches 12 parts of COo in 10,000 thenthat air will contain enough harmful impuri-ties thrown off by the lungs to make it of-fensive and impure. The CO2 content then is an indicator of thepurity of the air only when this COa has beenthrown off in the breath of persons… … Steam and PowerPumps CentrifugalPumps Air Compressors CondensationHeating Pumps VacuumHeating Pumps AMERICAN STEAM PUMP COMPANY J. M. STANNARD, Mi-r. CHICAGO925-928 Monadnock Tel. Harrison 1501
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
