"He discovered that an alloy of manganese and titanium has the property of insulating body from dæmon."

Manganese is a metal that has many important alloy uses, especially in rust prevention in stainless steel. However in large amounts, especially through inhalation, manganese can be poisonous to mammals and can cause sometimes irreversible neurological conditions, including psychiatric and nervous disturbances known as "manganism".

Its physical effect on the mental health of human beings is especially relevant in the context of Northern Lights, when we consider what the alloy of manganese and titanium is used for.