Teapot on a gas-stove
Sherlock Holmes passed on kitchen.
The kitchen was small and cozy. The teapot loudly hissed on the gas-stove.
– The hostess does not watch the ware, – Holmes thought.
Why did he decide so?
If the teapot hisses loudly before the water begins to boil, the teapot means to be old, has a thick layer of scale on internal walls. Careful hostesses periodically remove scum.
© Elkin V. Physical tasks of Sherlock Holmes. 1997