—, Stockholm, of Sciences, iv, 387.
[Acarus,] Crosse's, xxxii, 374f; xxxv, 125f; xlix, 227.
—, experiments of W. H. Weekes, xliii, 395.
—, the supposed microscopic fungus, xliii, 205.f
Acetic acid, a new process for obtaining from alcohol, xxviii, 358.
— —, on crystallizable, C. Despretz, xxvii, 197.
Achromatic microscope, improvements in, E. Thomas, xx, 265.f
Acid, acetic, new process for, from alcohol, xxviii, 358.
—, —, on crystallizable, C. Despretz, xxvii, 197.
—, angelicic, xlvii, 196.