Hence it must either evaporate or sink into the soil.
In the preparation of this salt, it is preferable to mix the component solutions in the cold, and to evaporate them at a temperature not exceeding 60° C. ioo parts of water dissolve iio parts of sodium alum at o° C. (W.
It is on the windward faces of the highest ground, or just beyond the summit of less dominant heights upon the leeward side, that most rain falls, and all that does not evaporate or percolate into the ground is conducted back to the sea by a route which depends only on the form of the land.
The perennial lakes, such as those just described, hold their waters for years and perhaps centuries; but the ephemeral lakes usually evaporate in the course of the summer.
In the puszta are numerous small lakes, named generally Feher To or White Lakes, because they evaporate in the summer leaving a white crust of soda on their bed.