This time I used all the resources of scent and stench that my knowledge of drugs would permit.
A dozen saucers were arranged, some in the interior of the wire-gauze cover, the prison of the female, and some around it, in an unbroken circle.

Some contained naphthaline; others the essential oil of spike-lavender; others petroleum, and others a solution of alkaline sulphur giving off a stench of rotten eggs.

Short of asphyxiating the prisoner I could do no more.

These arrangements were made in the morning, so that the room should be saturated when the congregation of lovers should arrive.
In the afternoon the laboratory was filled with the most abominable stench, in which the penetrating aroma of spike-lavender and the stink of sulphuretted hydrogen were predominant.

I must add that tobacco was habitually smoked in this room, and in abundance.