EN
The paper describes analysis of mineral water in Sicily, performed in 1777 by Michał Jan Borch, during his travel to Sicily ad Malta. Borch analyzed waters of about 30 mineral springs and classified waters according to their chemical properties. The results of these investigations were published by Borch as separate chapter of his book Mineralogy Sicilienne, Docimastique and Metallurgique (Turin 1780). in the paper the Polish translation of this chapter. The work of Borch is an interesting example of the of Polish researchers activity in the early scientific investigations in Europe.