The lantern is one of the four treasures (along with the "draught of the dead", some ice, and a chalice). Get all 4, and fill the lantern with kerosene in the basement. Then the ghost cat will tell you where to take the items.
It is red... like your average lantern.... you have to play with the clocks to get it though... look up "Haunted House Poptropica Walk-through if you want to know how to beat the clocks.
The LANTERN is one of the four special items you have to collect in the Haunted House. The ghostly cat will tell you where to take them. There is fuel for the lantern in the basement. (see related question)
There is a barrel of kerosene in the basement.
get kerasoene barrle and click on the candle.
When you get the lantern go down stairs and find a barrel and click it. Then the lantern will light up.
To light the lantern in the haunted house you have to go to the floor you came in on and click on the kerosene barrel.
you get it when both clocks strike midnight at the same time.
There is a barrel of kerosene near the entrance to the basement.
There is a barrel of kerosene under the stairs in the basement.
There is a barrel of kerosene under the stairs in the basement.
There is a barrel of kerosene under the stairs in the basement.
fill it with kerosene in the basement under the stairs.