Relaxation Rewind! Bad Drains and How to Test Them, Part 1
Boring Books for Bedtime Readings to Help You Sleep
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The Problem of Sewer Gas in the House
No gas in bulk can pass through the trap under ordinary circumstances. Its density is lessened by diffusion or the mixing of the gas which takes place at the grating. We are certain that similar plans were exhibited last year at the health exhibition as models for country architects and builders to copy. And 99 out of every hundred sanitary inspectors would sign the certificate that the sanitary arrangements were carefully tested and found perfect.
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