Urea, on the preëxistence of, in uric acid, xli, 46.
— and uric acid, J. Liebig, xxxiv, 40.
Urinary calculi, iv, 149; xvii, 190.
Urine, rosaic acid in, xvii, 385.
—, diabetic, detection of sugar in, xlix, 200.
Usher, F. C., on the elevation of the banks of the Mississippi in 1811, xxxi, 294.f
Uvularia, used for poisoned wounds, xxxv, 270.
V.
Vaccination, a remedy for the plague, iv, 196.
Vacuum, heat of, ii, 343.