A short miscellany note from Popular Science Monthly, reporting via La Nature and Italian newspapers on efforts in Brazil to produce silk from a little-known moth, called Bombyx saturnia and known as the porta-espejos. It describes the caterpillar's food plants, the nest-like cocoon, the short six-to-seven-week harvest, the simple filature in warm water, and the thread's strength and coarseness. It notes hopes of producing a very cheap silk for weaving and sewing thread.