Question: Which magazine was published in London and was influential in the 1840s and 1850s?
Sentence (from "William Mudford"): His short story "The Iron Shroud", about an iron torture chamber which shrinks through mechanical action and eventually crushes the victim inside, was first published in August 1830 by "Blackwood's Edinburgh Magazine", and later republished separately in 1839 and 1840 with the subtitle ""Italian Revenge"".
Relevant evidence: No