Fiction ~ short story
First published* in Weird Tales, December 1933
Collected in More Spook Stories (1934)
(First read 23/12/2012)
Monkeys/apes, an ancient Egyptian mummy and the curse that inevitably goes with it, a London surgeon who experiments on live animals (among them, obviously, monkeys) ~ all the ingredients for ... well, a routine Benson spook/horror story in which the author cannot resist the temptation to tell you, around the halfway point, what's going to happen in the end, making it not worth your while to read to the end.
It's available online here.