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Updated: May 21, 2025
It would have been satisfactory to know the number of the Lombard navigators from time to time employed in excavating the lagoons, as well as of the native laborers, who carry on operations after their departure; but we may with certainty infer the successive appearance of fresh soffioni on the sides of the mountains from the perpetually-recurring necessity of excavating new lagoons.
By the construction of immense cisterns for the catching of rain water, by the employment of steam-engines for raising it from below, and probably by creating artificial vents for the soffioni, the quantity of borax produced might be almost indefinitely increased, since the range of country through which the vapor ascends is far too great for us to suppose it to be exhausted by the production of 7000 pounds of borax a day.
Another lagoon is scooped out lower down the mountain, the site being determined by the occurrence of soffioni; and here the same processes are followed, and the same phenomena observable.
The soffioni, or vapors, having been observed to burst forth with more or less vehemence in various parts of the mountains which, fortunately for industry and commerce, are copiously irrigated with streams of water the idea was conceived of forming an artificial lagoon on the site of the most elevated vent. A large basin having been excavated, the nearest stream was turned into it.
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