Complex sentence: The water from Lourdes was thoroughly analysed by independent chemists in 1858 and 1859, and does not appear to have a latent power to cure and has no special scientific or medical properties.
Split into simpler sentences: The water from Lourdes was thoroughly analysed by independent chemists in 1858 and 1859. It does not appear to have a latent power to cure and has no special scientific or medical properties.