One of the most worrying things an entomologist has to put up with is that after carefully making a collection his most valued specimens are nearly eaten away, either with mites or the Dermestes beetle.

For the benefit of my brother enthusiasts, let me give briefly my personal experience. Last June captures at light were very good and numerous. Many rare insects were taken and set out. The settingboards were placed on a shelf. By the morning the contents of three boards were literally eaten away by large black ants, house flies, and the little black and orange beetle. If my thoughts had been candidly expressed I am afraid my reputation would have been irretrievably lost, so I hunted around for a remedy and was soon successful in finding one.