[Stoves] the search for the CO2 / CO monitoring device/ method... looking for the canary in the coal shaft

[Crispin Pemberton-Pigott]

Dear Richard

Let's put a canary at the little opening that is the source of the methane
in the mine, and another on my shoulder. There is wind in the tunnel, of
course.

The canary next to the crack in the rock dies. The one on my shoulder dies.
What does that tell me about my health?

Regards
Crispin