These are granulated mixtures of Salts with Sugar and Sodium Bicarbonate and Tartaric Acid, which effervesce when the Salt is dissolved in Water and furnish agreeable aerated draughts.

The following are official, the strength indicated being that contained in 60 grains (4 Gm.), a teaspoonful being the ordinary dose, dissolved in about 6 fluidounces (180 Cc.) of water:

Gm.

Gr.

Caffeina Citras Effervescens.............................caffeine

0.16

2 2/5

Lithii Citrata Effervescens.................. lithium citrate

0.2

3

Magnesii Sulphas Effervescens........ magnesium sulphate (average dose 16 Gm. (240 grains), contains 8 Gm. (120 grains) mag. sulph.).

Potassii Citras Effervescens ........... potassium citrate

0.8

12

Sodii Phosphas Effervescens ........ sodium phosphate

0.8

12

Effervescent Salts (Granular) N. F. The strength given for these is the quantity contained in 90 grains (6 Gm.), which represents about the quantity of these Salts contained in a heaped teaspoonful of ordinary size, the average dose.

Ferri et Quininae Citras Effervescens, 1 grain (0.06) Citrate of Iron and Quinine.

Ferri Phosphas Effervescens, 2 grains (0.12) Phosphate of Iron.

Potassii Bromidum Effervescens, 20 grains (1.3) Potassium Bromide.

Potassii Bromidum cum Caffeina, 10 grains (0.6) Potassium Bromide and 1 grain (0.06) Caffeine.

Sal Carolinus Factitius Effervescens (Effervescent Carlsbad Salt, artificial). - A solution of about 87 grains (5.5) in 6 fluid-ounces (178 Cc.) of Water represents an equal volume of Carlsbad Water (Sprudel).

Sal Kissingensis Factitius Effervescens (Effervescent Kissingen Salt, artificial). - A solution of about 80 grains (5 Gm.) in 6 fluid-ounces (178 Cc.) represents an equal volume of Kissingen Water (Rakoczy).

Sal Vichyanus Factitius Effervescens (Effervescent Vichy-Salt, artificial). - A solution of about 57 grains (4 Gm.) in 6 fluidounces (178 Cc.) of Water represents an equal volume of Vichy Water (Grand Grille).