The Hoffman House Bartender's Guide by Charles S. Mahoney (1905, p.140)

1 lumpice base
1 jiggerScotch whisky — J. P. C. Scotchbase
1 bottleSoda water — plain sodadilution
  1. Put one lump of ice and the Scotch in a large glass.
  2. Add a bottle of plain soda and serve.

Ice: Lump ice

See also: Royal High Ball, Whiskey Rickey