What Supersaturation Is Supersaturation is not some arcane computation lifted out of physical chemistry and placed on 24 hour urine kidney stone reports as a kind of flourish, or occasion for learned teaching. It is the sole driving force for crystallization, and, at least to me, the main variable I follow in my practice of stone prevention. Solubility The superb and recent review of supersaturation I placed in the Science section makes clear its true physical meaning. You can saturate a solution easily. Simply stir it with an excess of any substance at a constant temperature, and eventually the concentration of the substance will come to some final and unchanging concentration. By excess, I mean there will be some of the solid … Continued


A NEW AND USEFUL REVIEW THE FUNDAMENTAL MEASUREMENT OF STONE PROPENSITY The three Moirai, or the triumph of death, Flemish tapestry ca 1520, Victoria and Albert Museum, London, depicts Clotho, who spins the thread of life, Lachesis, who measures out the length of the thread, and Atropos, the inexorable, who cuts the thread. In book 11 of the Odyssey, Odysseus travels to the underworld where, among other matters, he learns from Tiresias his own ‘fate’; that he will return to his home and his own wife; that he will travel again to a place so far from the sea his oar will go unrecognized; and that he will die in peace, by the sea and among his own people. But he must make an offering in … Continued