Gasogene

It consists of two linked glass globes: the lower contained water or other drink to be made sparkling, the upper a mixture of tartaric acid and sodium bicarbonate that reacts to produce carbon dioxide.

[1] The earliest occurrence of the word noted in the Oxford English Dictionary dates from 1853, quoting a reference in Practical Mechanic's Journal on "Gaillard and Dubois' 'Gazogene' or Aerated Water apparatus".

[2] A gasogene is mentioned as a residential fixture at 221B Baker Street in Arthur Conan Doyle's Sherlock Holmes story "A Scandal in Bohemia": "With hardly a word spoken, but with a kindly eye, he waved me to an armchair, threw across his case of cigars, and indicated a spirit case and a gasogene in the corner.

[7] A gasogene is mentioned and its use described in Sherry Thomas's novel A Study in Scarlet Women (Book 1 of the Lady Sherlock series) on pages 244 to 246.

(Ebook ISBN 9780698196353) Amelia Peabody pulls a bottle of whiskey, a gasogene, and glasses from a hamper in order to make herself a whiskey and soda after getting her family on a train to Luxor in the novel The Golden One by Elizabeth Peters, a pen name of Barbara Mertz.