This thing, so far as flavour is concerned, is nothing but a Seidlitz powder.
"Paul Kelver" by Jerome Klapka, AKA Jerome K. Jerome
When the letter is opened you'll see it effervesce like a seidlitz powder.
"You Never Know Your Luck, Complete Being The Story Of A Matrimonial Deserter" by Gilbert Parker
Seidlitz powders are usually put up in two papers.
"Enquire Within Upon Everything" by Anonymous
Seidlitz-powders are perhaps a little too strong for frequent use in a tropical climate.
"The Art of Travel" by Francis Galton
Just because I gave you a seidlitz powder once.
"Jack at Sea" by George Manville Fenn
Therein was a small packet which resembled the familiar wrapper of a seidlitz powder.
"The Green Rust" by Edgar Wallace
The bowels should be kept open by Rochelle or Epsom salts, or seidlitz powder.
"The Ladies Book of Useful Information" by Anonymous
A quarter of a Seidlitz powder may be taken.
"Alcohol: A Dangerous and Unnecessary Medicine, How and Why" by Martha M. Allen
That comes of training a good horse on Seidlitz powders and bran-mash.
"Punch, or the London Charivari, Vol. 98, 19 April 1890" by Various
Seidlitz powders come in two packets, one white and one blue.
"American Red Cross Text-Book on Home Hygiene and Care of the Sick" by Jane A. Delano