The scale salt known as BISMUTH AND AMMONIUM CITRATE is a very unsatisfactory preparation. BISMUTH CITRATE (SOLUBLE), ‘WELLCOME’ BRAND, has the same therapeutic properties, but is much more stable in character. Being very freely soluble in water and yielding a bright solution, it is well adapted for the extemporaneous preparation of a solution corresponding to Solution of Bismuth and Ammonium Citrate, B.P., or for preparations in which the U.S.P. salt is used. Like the latter, which it is designed to supersede, it is not compatible with acid liquids. BISMUTH AND LITHIUM CITRATE (SOLUBLE), ‘WELLCOME’ BRAND. This new combination, in the form of handsome colourless scales, is readily soluble in water. It is thus particularly convenient when the effects of both lithium and bismuth are desired, as in gouty dyspepsia. [Sidenote: Sedative and hæmatinic] BISMUTH AND IRON CITRATE (SOLUBLE), ‘WELLCOME’ BRAND, permits the sedative properties of the bismuth to be exerted on the digestive organs, while the iron, which is presented in a soluble, non-irritating and non-astringent condition, is readily absorbed to attack the anæmia which is the exciting cause in some cases of dyspepsia. The salt is in the form of yellowish-green scales, readily soluble in water. [Sidenote: Definite composition] IRON ARSENATE (SOLUBLE), ‘WELLCOME’ BRAND, differs from the insoluble amorphous powders, of indefinite composition, so often prepared under this name, in being a scale preparation readily soluble in water, and containing an amount of arsenic equivalent to 34–35 per cent. of anhydrous ferric arsenate. [Sidenote: Soluble Manganese Salts] A series of _soluble_ MANGANESE SALTS and combinations of the same with Arsenic, Quinine or Strychnine are unique forms in which this chemical may be prescribed with the best effect. [Sidenote: Pilocarpine] The ‘WELLCOME’ BRAND salts of PILOCARPINE, as a result of prolonged and costly investigations, are free from the less active isopilocarpine and the inactive pilocarpidine with which they are usually found to be associated. The melting point indicates the high purity of these salts. [Sidenote: Quinine Sulphate] A special feature is made of QUININE SULPHATE in the convenient form of _compact crystals_ occupying one-third the space of the bulky chemical ordinarily offered.