To the upper right we have very pure potassium chlorate, so much so that it bursts into flames when mixed with sugar and catalyzed with some sulfuric acid. [Mr. Home Scientist] produced the KClO3 ...

IT was observed some time ago by M. Mallard (Bulletin de la Sociélé Minémlogique, 1882, p. 214) that certain crystals, such as boracite and potassium sulphate, have their crystallo-graphic character ...