In order to alert the members of Dumbledore’s Army to an upcoming meeting, each person was given a fake Galleon (OP19). The serial numbers of the fake Galleon would change to show the date and time of the upcoming session and the Galleon would become warm. Read MoreFireplaces and hearths
Hogwarts has many fireplaces used for heat, light and communication – See Hogwarts Fires Fireplaces appear to be the main source of heat for the castle: “While the Gryffindor common room and the Great Hall had roaring fires, the draughty corridors had become icy and a bitter wind rattled… Read More
— "initiated with Floo Powder"
Effect: communication between fires Using Floo Powder in a fire connected to the Floo Network, a person can communicate with another over distance. The head of the person making contact appears in the midst of the flames and they can hold a conversation and even interact physically with the person… Read MoreFloo Pow
Floo Pow is the only licensed producer of Floo Powder in Britain. It’s headquarters are in Diagon Alley. Read MoreFloo Powder
Floo Powder is a silvery powder, was invented in the 1200s by Ignatia Wildsmith (FW), and when thrown in the fire allows magical travel and magical communication between fireplaces connected to the Floo Network. The powder is thrown into the flames, which burst up emerald green. To travel,… Read More