What inferences can you make about the fact that the father uses the word hark and that the house the family lives in is named "laburnam villa"

The word "hark" alludes to the time period the story is set in.... the name of the house, "Laburnam Villa", adds to the mystery, as Laburnam is a poisonous plant..... similar to the poison (bad luck) associated with the monkey's paw.