Contributions to the Micro-palæontology of the Cambro-Silurian Rocks of Canada: Monticuliporidœ of the Chazy, Black river and Trenton formations. Some previously unrecorded species of Philodictya, Stictopora, and Arthronema, from the Trenton formation; Two species of Tetradium from the Trenton and Hudson river formations, by A. H. Foord. 1883. -pt.II. Some Polyzoa (Bryozoa) and Ostracoda from the Cambro-Silurian rocks of Manitoba, by E. O. Ulrich. 1889. -pt.III. Some Ostracoda from the Cambro-Silurian, Silurian and Devonian rocks, by T. R. Jones. 1891. -pt.IV. Radiolaria from the Pierre formation of northwestern Manitoba, by D. Rüst. 1892