The term Saltpetre is applied to a variety of bodies, distinguished, however, by their bases, as potash saltpetre, soda saltpetre, lime saltpetre, etc., which occur naturally.

If peeled, this should be done very thinly, as the greater part of the valuable potash salts lie just under the skin.

Dr. Eder has for a considerable time directed especial attention to the soda and potash developers, either of which seems to offer certain advantages over the ammoniacal pyrogallol.

The winter ashes, made from burning so much fuel and gathered from the brush-heaps and log-heaps, were carefully saved and traded with the potash men for potash or sold for a small price.

When boiled with alcoholic potash solution, it takes up a molecule of water and splits apart into piperic acid, C{12}H{10}O{4}, and piperidine, C{5}H{11}N. This latter base has been shown to be a hydrogen addition product of pyridine, C{5}H{5}N. When heated with concentrated sulphuric acid, it is oxidized to pyridine.

Two figures met him,the dark-eyed Miss Drake, all in white, and behind her a shuffling, grinning native woman, who carried a basin, in which permanganate of potash swam gleaming like diluted blood.