171 



43. POTASSIUM ARSENITE. KH 9 AsO,. (Potassium Binarseniate, 



Potattium Dihydric Arseniate, Macqueer's Salt.) 

 a. Crystals. 



44. BOROTAETBATE. 



a. Pseudo-crystalline scales. 



45. BROMIDE. KBr. 



a. Crystals, a commercial specimen. 



b. Ditto, deliquescent. 



c. Ditto, in the form of small cubes. 



d. Ditto, in large opaque cubes. 



e. Ditto, in hollow tetrahedrons. 



/. Ditto, in large crystals. Presented by Messrs. Atkinson 



&Co. 

 * g. A mass of fine crystals. Presented by Messrs. Hopkin 



& Williams. 



Note. Specimen b probably owes its deliquescent character to the 

 presence of carbonate of potassium. Specimens c and d probably contain 

 some iodide of potassium, since specimens of the bromide containing that 

 salt usually form finer crystals. See P. J. [1], vol. xvii., p. 259. 



4G. CARBONATE. K 2 C O s . 



a. Impure. (Pearlash.) 



b. Purified. (Salt of Tartar, Salt of Wormwood, Subcar- 



bonate of Potash.') 

 c. Deliquesced. (Oil of Tartar per deliquium.) 



47. BICARBONATE. K H C 3 . (Hydric Potassic Carbonate, Acid 



Carbonate of Potassium.') 



a. Crystals, commercial specimen. 



b. Ditto, fine specimen. 



Note. For fig. of crystal, see Per. Mat. Med., vol. i., p. 496. Wattt, 

 Diet. Chem., vol. i., p. 792. 



48. CHLORATE. KC10 8 . (Oxymuriate of Potash, Kali Chlorinicum, 



Ph. Ger.) 



a. Crystals, commercial specimen. 



b. Ditto, tine specimen. 



c. Ditto, chemically pure. 



Note. For fig. of crystal, see Per. Mat. Med., vol. i., p. 511. 



49. PERCHLORATE. KC10 V 



a. Crystals. 



Note. These crystals are different in shape from those of the chlorate. 

 See Gmelin, Chemistry, vol. iii., p. 62; and for fig., vol. i., pt. i., figs. 

 53, 54. 



i>0. CHLORIDE. KC1. (Muriate of Potash, Febrifuge or Digestive Salt 

 of Sylvius, Diuretic Sal Ammoniac, Regenerated Sea Salt.) 



