Stuart's Fancy Drinks and How To Mix Them by Thos. Stuart (1904, p.9) — Stuart 1904, opening service section

1 ponyAbsinthe base
1 glassice — fine icebase
2 wineglasswater dilution
4.5 dashgum syrup — Source says 4 or 5 dashes.sweetener
  1. Shake until the outside of the shaker is covered with ice, then strain into a large bar glass.

Ice: Fine ice