Part of Lovecraft’s Investigators and Their Guns.
(set in 1899, written in 1927, published in 1928)
“Shut up, you fool! Do you suppose your grotesque nonsense has any weight with me? Words and formulae – words and formulae – what do they all mean to one who has the substance behind them? We’re in a material sphere now, and subject to material laws. You have your fever; I have my revolver. You’ll get no specimens, and I’ll get no fever so long as I have you in front of me with this gun between!”
Written by Adolphe de Castro and H.P. Lovecraft, the Bad Guy in this Gaslight story is clinic-man Surama, a man of dubious extraction and allegiance.
Surama used a revolver of unspecified make and model. We can assume that he acquired it in America rather than brought it from North Africa. A suitable choice would be a Colt New Army & Navy revolver in .38 Long Colt (9×26mmR) or a S&W Safety Hammerless revolver (Investigator Weapons 1: The 1920s and 1930s, p. 57) in .32 S&W (7.9×15mmR) or .38 S&W (9×20mmR).