Just bought this. Also bought a mat,  after last night a part vanished in front of me and took a couple of minutes to find. 馃檮

Is the author well known? See it was published in the UK.

It was originally published in 1945. Work colleague suggested that it was still a relevant book.聽

Hilarious how the world has fortunately moved on. The suggested method for making a cleaning solution involves dissolving a piece of cyanide the size of a walnut, with the caveat... It is of course lethal馃槺