Running water and electricity are still lacking in many matchbox houses.
An experiment was conducted with a matchbox containing leaf fragments carrying aphids, in one case with hover fly larvae and in another with ladybird larvae.
The matchbox carried the logo of what appeared to be a seedy nightclub.
The matchboxes we are considering at the end of this step are still distinguished, but not necessarily bunches.
All the adults reported the conventional content of a matchbox.
We will take this into account by considering bunches as preferential matchboxes.
We remark that distinguished matchboxes are always oriented.
Up to now, we have exploited the relationship between the intrinsic and the induced topology of an oriented matchbox.