Neither the House nor Senate chamber had fresh air circulation, so carbon monoxide was building up in various parts of the Capitol building. In order to make improvements to air flow, air quality tests needed to be done. The prospect of reporting on which parts of the Capitol had the most gas was just too delicious for the Sunday Magazine to resist. Oh, the hilarity.

GAS TESTS IN THE CAPITOL: Effect of Congressional “Hot Air” as Shown by Official Experiments (PDF)

From September 11, 1910