I'm trying to find the name of a short story set in pre-1920 England about medical students. One brings back a research specimen from Egypy of some other middle eastern place. The thing is like a mummy, comes alive, and kills. I think the title is box # 21 or some other number. Not sure who author is, but not Conan Doyle and probably not Poe. Doesn't seem like it was written recently. Any suggestions? Thanks
So it is definitely not this one?
Arthur Conan Doyle's Lot No. 249