from The Craft of the Cocktail
Shake all ingredients with ice and strain into a chilled cocktail glass.
I can't resist a drink named after a racetrack. Harry Johnson ha another horsy drink called the Turf Cocktail in the 1888 edition of his Bartender's Manual with the following recipe: equal part Gin (Dry) and vermouth with 3 dashes maraschino, 3 dashes orange bitters, and 3 dashed absinthe. Stir and serve up with an olive Sounds very martini-like to me.